my 96 sc300 has some semi ricey 2nr 17" wheels that were already on the car when I bought it. they are 17" but I don't know the offset. what do you guys think about getting Supra Twin Turbo calipers and rotors to fit? (I did search and found a ton of stuff on the conversion but not exactly what I was looking for) Thanks in advance!

 

It really has very little to do with the offset of the wheels. Whether or not they fit has to do with the wheel face. Post a pic of the wheel and you might get better answers.