My 165 has 205 calipers and discs on the rear. Front 205 Calipers with Lexus IS200 Discs. 165 Master cylinder and booster.
Technical help can be found on this site and I also had help thanks to fcZach.
Master Cylinder - pedal travels a bit more. (but I will be changing to a 205 master cylinder and booster soon)
Wheels - currently running 16x7.5 inch 3 piece with 30 offset. Yes on rear the calipers hit the inside of the wheel center,
so I run 25mm thick spacers. Clearance of rim to caliper (outwards) is about 15mm.