Off the bat you should know this is something that you can't just do and drive immediately. If your tib is your daily driver, you'll need to get a second mount from somewhere else, as this takes about 2 days to completely set. I did this with a mount I purchased off of another NT member so I could still drive my car. The materials (assuming you already have the tools) will run slightly over $35 if you use your current mount, and supplies you enough to do 2 mounts and still have some scraps left over.
I wrote this originally assuming that you would know how to take the motor mount out, as it's mentioned several times in several other threads.
First, I started with the stock mount.
You'll also need 2 junk CDs, I just used the CD shaped plastic that comes at the top of the spool.
The material I used was ordered from Mc Masters, www.mcmaster.com part number 8644K11.
I also used a piece of copper pipe, I just took the old mount to Lowes to get a piece of pipe that was the same size as on the stock mount.
Step 1 - Cut out as much of the stock rubber as you can. It's ok if you leave some in, the urethane will adhere to the rubber as long as you scuff it up with a dremel or something similar.
UnHolyTib also suggested this, seems like a real good idea to me too:
Make sure you clean it as much as possible and make sure there is no oil or grease or grime before the next step. I used Purple Power degreaser, I did not dliute it with water. Allow it enough time to dry.
Step 2 - On a piece of tin foil, lay the CD and the mount, keeping it as flat as possible. I let the mount hang over the edge of my counter. If you have it handy, I recommend rubber cement or duct tape around the edge of the mount and the CD to help prevent leakage. After the cement dries or you have it sealed up with as much tape as you can, it's time to mix up the urethane.
They send you enough to do 2 mounts as I said, so if you're only going to do one at a time, get a throw away tupperware container and pour half of the bottle and half of the can into the tupperware. If you're doing both at the same time, then you can pour the whole bottle into the can.
BE CAREFUL!!!! When I did this step, the top of the bottle popped off right into the can. Lucky for me, I was mixing up the entire batch.
Step 3 - Pour the urethane into the mount, up to the top.
Take the second CD and place it on top. Find something to weigh the mount down and place it on top of the CD to help make sure the mount stays level. Some may seep out of the bottom a little, so you may want to use rubber cement to stick the CD to the mount and wait until it dries to help contain it. After the mount is 100% finished it'll peel off easily. Without that, not a lot seeps, but it is enough to drip onto a rug if you don't have it covered.
The instructions say the urethane is usable after 24 hours, but because of the thickness of the mount, I let it sit for 3 days to make sure it hardened properly.
Step 3 - After the urethane has hardened fully, drill a hole through the center. I used a drill bit about the size of the bolt, and it was still too small so I had to twist it to widen the hole some. Press the pipe through the center. It should be very very tight.
Trim the pipe as needed, my dremel worked fine for this, just took a few minutes. I trimmed it to the same length as the stock mount. And now it's ready to install, and you have a full urethane mount (or 2 if you decided) for under $40.
I wrote this originally assuming that you would know how to take the motor mount out, as it's mentioned several times in several other threads.
First, I started with the stock mount.

You'll also need 2 junk CDs, I just used the CD shaped plastic that comes at the top of the spool.

The material I used was ordered from Mc Masters, www.mcmaster.com part number 8644K11.

I also used a piece of copper pipe, I just took the old mount to Lowes to get a piece of pipe that was the same size as on the stock mount.
Step 1 - Cut out as much of the stock rubber as you can. It's ok if you leave some in, the urethane will adhere to the rubber as long as you scuff it up with a dremel or something similar.
UnHolyTib also suggested this, seems like a real good idea to me too:
CiZiN also added this:

Make sure you clean it as much as possible and make sure there is no oil or grease or grime before the next step. I used Purple Power degreaser, I did not dliute it with water. Allow it enough time to dry.
Step 2 - On a piece of tin foil, lay the CD and the mount, keeping it as flat as possible. I let the mount hang over the edge of my counter. If you have it handy, I recommend rubber cement or duct tape around the edge of the mount and the CD to help prevent leakage. After the cement dries or you have it sealed up with as much tape as you can, it's time to mix up the urethane.
They send you enough to do 2 mounts as I said, so if you're only going to do one at a time, get a throw away tupperware container and pour half of the bottle and half of the can into the tupperware. If you're doing both at the same time, then you can pour the whole bottle into the can.
BE CAREFUL!!!! When I did this step, the top of the bottle popped off right into the can. Lucky for me, I was mixing up the entire batch.
Step 3 - Pour the urethane into the mount, up to the top.

Take the second CD and place it on top. Find something to weigh the mount down and place it on top of the CD to help make sure the mount stays level. Some may seep out of the bottom a little, so you may want to use rubber cement to stick the CD to the mount and wait until it dries to help contain it. After the mount is 100% finished it'll peel off easily. Without that, not a lot seeps, but it is enough to drip onto a rug if you don't have it covered.
The instructions say the urethane is usable after 24 hours, but because of the thickness of the mount, I let it sit for 3 days to make sure it hardened properly.

Step 3 - After the urethane has hardened fully, drill a hole through the center. I used a drill bit about the size of the bolt, and it was still too small so I had to twist it to widen the hole some. Press the pipe through the center. It should be very very tight.

Trim the pipe as needed, my dremel worked fine for this, just took a few minutes. I trimmed it to the same length as the stock mount. And now it's ready to install, and you have a full urethane mount (or 2 if you decided) for under $40.
