This DIY was created by eclark53520. I am simply posting this in the DIY section so it is easy to find. Thank you eclark.
Extension(I recommend a 6 inch)
5/8" Spark Plug Socket
Recommended plugs for the 2.7L are Champion RC10YC4 and NGK PFR5N-11
Remove plastic engine cover(Hint: Pop off the silver inserts and H sign to get to the bolts holding it on)
Remove intake hose between MAF sensor and throttle body(Use steps 11-17 in this DIY for help if you are unsure on how to do this: http://newtiburon.com/forums/showthread.php?t=150273
Remove throttle body(DIY posted here: http://newtiburon.com/forums/showthread.php?t=1761
Remove upper intake manifold(DIY posted here: http://newtiburon.com/forums/showthread.php?t=1760
Measure and gap all your new plugs. I use a .044 gap I believe. Recommended gap is 0.039~0.043 in. or 1.0~1.1 mm
Pull black boot off of spark plug and out of the plug well
Use 5/8" plug socket, extension, and ratchet to remove the spark plug
Apply anti-seize to the threads on the new spark plugs to prevent damage to the aluminum heads.
Guide the new spark plug into the plug socket. Using the extension, lower the new plug into position, being careful not to damage the ceramic insulator. Use your hands NOT the ratchet to get the plug started in its threads. You do this because you don't want to cross thread it. If it doesn't go in relatively easy for the first few turns remove and try again.
Use the ratchet to tighten the plug firmly. Do not over-tighten, as this can cause cause you to damage the threads in the cylinder head. Torque wrench specs are 18-21 ft/lbs.
Apply dielectric grease to the plug wires to prevent any possible damage.
Replace spark plug boot onto spark plug. Make sure it snaps into place and can't fall or pop off.
Note: It's recommended you replace your throttle body and intake manifold gaskets, but unless you notice any cracks, chips, damage, etc., you will be fine to reuse the ones you have.
Here is my contribution:
It is not necessary to completely remove the throttle body from the engine. Simply unbolt the two bolts and the two nuts that connect it to the manifold. The throttle body will just hang there after the manifold itself is removed.