The front rims are 18 X 8 1/2 with 245/40/18 and the Back are 18X 9 1/2 with 275/35/18. I think these cars would have sold alot better with this setup. makes it look like a musclecar now. You will definitley have to cut the lips of the rear fenders. And you will want to have some help. As I said, my friend and I used a sawsall. It took both of us. I taped the fenders. Then put about 5 layers of duct tape on the part of the sawsall that would go along the fender. I held the sawsall against the fender so it wouldn't jump while my friend pushed it. Tape the fender and mark where you want to cut. No problmes and no scratches. Just work a little at a time and watch what you are doing. I would definitley suggetst Drag bags or spring stoppers. Theses cars duck down to far. As far as mods. I now have the K & N CAI, kooks headers, magnaflow catback with X pipe and a predator tune. The cam is next. I don't know if anyone saw the article from Hot rod magazine where they did the buildup, They tested several combonations to find out the best bolt on combo. Here is the link.
http://www.hotrod.com/techarticles/1...l_block_build/