Im stuck on what size to get.

[kleners]

Ok i will check it out.
Im going disk in the rear. but big brakes are not a passion to me. so if i have to run an 11" or 12" that is fine. but ill check with them when i order them.

[Viperlover]

I'd go with the 29s

[Apogee]

31's are huge...but why wouldn't you build your car such that you could run either those or the 29's? It's a quasi-prostreet build with huge diameter wheels, so the more sidewall you can fit the better from a 1/4-mile performance perspective. It's a back-half project, so you can fit whatever you want and set your ride height accordingly.

Can you post the layout drawings for reference?