The rears are 285/45/18 Nitto 555s mounted on 18x10 rims with 5 3/4" offset. The rear end is a B-body spec Moser 60 attached with A-body XHD springs and the 3/4" relocation kit. The brakes are Baer sports sold by Year One. Beware that these brakes do not bolt on per the instructions if you have the relocation kit and B-body rear. The E-brake mechanism will hit the springs. I ended up swapping sides and mounting them on the front side of the rotor. I still might have issues with the rear sway bar. The right side has about 5/8" between the spring and tire. It also has 1/2" between the tire and quarter lip. The quarter panel on the right has been replaced by someone before I got the car so your measurements might be different. The left side has 1/2" between the tire and spring with 1" between the tire and fender. I took the measurements using a plum bob and measured to the bulge of the tire. I had to do this because the car is unweighted.
The fronts are 245/45/17 Nitto 555s mounted on 17x8 rims with 4 1/2" offset. All I can say, is I ended up buying a tool called the Mount Mate to make sure I got the offsets correct. When I took the measurements on the front, I didn't have the torsion bars in and was able to load the front suspension to see where the tire might rub. The Mount Mate allows me to mount the tire, with out the rim and adjust the offset to where it looks good. During the process, I learned that with this tire combo, you have to have at least 4 1/2" offset to avoid rubbing the fender. Any less won't do.