ET'S with ported J/or other iron heads SB

There is the other side of:

“You don’t know what you don’t know”,

and that is......

“Once you know...... you know”

My friend can know build as many mid-10 second 400 Pontiac Stocker motors as his heart desires....... without having to do any type of R&D........ because he knows what it takes.
Order the right parts, have the block machining done, have the heads done....... bolt it together and go.