Rms alterkation track width?

I have personal experience with the Alterkation set up having just completed a 69 Hemi Dart project. The Alterkation set up IS wider than stock by almost 2 inches. Wheels are a major problem as not many manufactures offer the correct set up. I had to special order mine and ended up cutting the control arms on top of it an additional 1 inch on each side. The R&P steering is flawless and the car drive great. I also run TTI headers and I would NOT recommend them again as they run VERY tight on the motor and oil temp has been a problem.