need converter stall suggestion.

I plan on installing a coverter that my friend rebuilds. He knows his stuff. On the plus side, I'll be saving $400,lol. He does use quality stuff so im not worried about that. Reason I ask here, is because Im not sure the exact specs on the cam, since My brother replaced it sometime in the 90's. He vaguely remembers it being a "purple" camshaft, but there is a variety of em.