Originally Posted by Caddyshack

Agree, you need to know what spec to go for based on what the engine is being built to for spec but Neil Roper can advise on that or Mark Shead (I think Mark likes the roper heads but does have his own spec)

My stroker has a Roper head and it was specced by Harvey Gibbs as he built the engine for the original owner.

OOPs - my bad. Mine is a Nick Waples head...that is who Harvey uses.