'69 Dart rear suspension kit questions (RMS and ControlFreak)

First, I'd like to know how wide a tire (with a mini-tub) you guys were able to fit in the rear and with which kit. I know the inner fender wells only go in an inch or two before you run parallel with the frame rail anyway, but every inch counts, and the way the lower links look on the RMS kit, it would appear the tire can't go much wider than stock, but I could be wrong.

i used the RMS street lynx.

my car was NOT mini tubbed and it fit a 275/50-17 under it.. that works out to be something like 27.8 X 10.8......