Backspacing/Offset help

[RunNGun87]

Guys
I just recently did the rear disc upgrade(F-Body LT1) on m Elco.
I found some wheels I am interested in, but I am not certain they will fit.
My question is has anyone done this brake swap, and what are the limitations (maximum/minimum) on wheel selection in regards to the backspacing and offset for a 20x10 wheel

Thanks
Redd

 

[LS1GN]

You're going to have to measure. The sheer size of those wheels (regardless of the brake swap) are going to be concerning. I'm not passing judgment, just making an observation.

I run 17 x 9s and they rub with a 235 55 17

 

[CVONESTOP]

There is a tool available for measuring, or go to the nearest tire shop.