440 source ductile adjustable rocker arms.

I'd run those Mancini branded Harland-Sharp rockers all week long and twice on Sunday. But the 1st thing I would do is figure out that camshaft, either by finding some numbers on it, or getting a degree wheel and dial indicator and measuring it yourself. Chances are the pushrods you have, are not going to be the correct length. S/F....Ken M