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

Hey guys, I'm doing some research for my '69 Dart project. I'll be running a 440 and 727 combo to an 8 3/4 rear, using the car for street driving and some racing at the drag strip and auto cross.

That being said, I had a few questions for anyone who's used the 4 link kits that RMS and ControlFreak offer for the Dart.

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.

Which kit did you go with and why? Are you happy with them?

I'll have more questions when I start sitting down and really looking at this thing, so stick around ;)