I'll have to find my camera to get pics, but we mounted the driver side harness
if you pop the trunk, the covering for the seat belt (you know where you pull them from, has a longer bolt then bolting them to the back of the driver side seat, we bolted the left shoulder strap there, we removed the back seat and ran the right shoulder strap through the area where the left seat belt buckle in the back us located. The left waist strap is bolted to the bar on the lower drivers side (if you put your hand on the wall closes to the driver's door and go all the way down to the base of the car there is a bolt there, and then the right waist strap went behind the seat and on the left bolt that holds the drivers seat sliding track to the base of the car. (It sounds more complicated than it is.)
The nice thing about this setup is that you can replace the stock covers on the trunk, put back the rear seat and use some of the stock bolts (because the sparco ones are larger than the holes (we had to drimmel the washers off of the bolts), and you can still use the rear seat belts and buckles, fold down the back seat and adjust your seats in the front.
I have to give prop to Darren to helped me through the entire process. lol
I'll be sure to put up some pics soon as I can (not sure when that will be, but soon)