13.3's to 11.8's to Forget it...

It's doable, but I think he needs some offset rockers and a victor intake for the BB heads. at least that's what I believe.
Should have went with the 210cc head for the type of build he's planning.
I got to say I'm a bit more optimistic with a big block aluminum heads and a converter... Some 355 in the rear end and he'll be happy on both fronts...