I intend on going with the Magnum EQ heads and stronger springs. It's my understanding that the factory springs won't scale much higher than a stock cam. I wanted to use my original heads but they were cracked between the valve seats which is really common on the Magnums. Not to alarm you but you might want to check yours. On the pushrods I honestly don't know which ones I'll need. I'm certain the originals will be too short for the regrind. I'll reuse the lifters and rocker arms.