Rocker arm rumor???

It's possible but what's even easier is if he buys the special Comp Cams screw in studs that adapt the heads 5/16" bolt size to a 3/8" size that's like a chevy. Tell him if he does this he also needs guide plates or things will flop all over. He'll also need hardened pushrods to last with guide plates. For the same money he can probably buy some decent rocker arms like Harland Sharps that are way better. They use a tie bar to positively locate them. Here's a pic of mine