The 68 in my Avatar has the. Complete RMS suspension with a power rack. I love it. Makes header fitment a breeze. The PS has a much firmer feel than the mopar. I also have Wilwood discs.
I have the same set up on the front of my '71 and love it w/the exception of I have the M2 manual rack & pinion. And it has a much firmer feeling, so much easier with the long tubes.
Thanks to Bill, (RMS) he is more than willing to listen to what you want and get you what you need w/o trying to 'over-sell'...
My rear was a completly different animal. I have a Curie narrowed to 48" with a nodular carrier, 4:10 gears and a locker, w/ tubs. It was a bit more 'involved' than what could be bought, fabricated most of it myself.
