Solid Roller Cam in a LA 360 and Edelbrock RPM Heads

Thanks for all the advise. The reason I am buying edelbrock heads is my J heads cracked. I really don't want to take the chance of picking up junkyard heads to only find more cracks. Won't 1.6:1 rockers move my rpm range up also by increasing duration at 0.050? I was wanting something that might be more modern/efficient from a lower rpm range, due to the swap to 3.23's, to something around 6000-6500 rpm. I was hoping to find someone that has experience with the "smaller roller cams". The few engines builds that I have found are 4" stroker motors, so it is hard to compare the two builds. The closest I have seen are hydraulic roller builds like below. The results look pretty awesome.

http://www.forabodiesonly.com/mopar/showthread.php?t=241854