I have a set of CAP lower control arms and Magnum Force uppers. My Car is a small block weighing 3520 (including 200 lb driver). From what I can find, I will be needing a set of 500 lb springs. I have not purchased the springs yet as I need to set my ride height to find out what length is needed.
I received my parts from Hemi Denny a few weeks ago and must say they are extremely nice. My plan is to install the parts sometime in the January timeframe.