G-Body Baer Track Rear Rotor Fitment Issue

[cornfed]

I have the regular 'Track' kit with 1-piece 12" rear rotors. My backside rotor to wheel mounting surface measurement is 1-15/16".



Kind of strange, but I have kit #4302040 and it says rotor diameter is 13".

The problem he is having with mounting the rotor is not related to the backspacing of the wheel.

Correct. My wheels are due Tuesday so I can't cross that bridge, yet.

I'm going back out to the shop and try to figure it out. Thanks for the help everybody.