Dratt, I was sooo hoping you'd know the answer
I've used the CVH flywheel to put a DOHC onto a Type 9 which was very successful , at least until the type 9 'erupted'.
Zetecs need some sort of spacer on the release brg when fitting to an MT75 which used to be available from Westfield (no longer - they will only supply genuine westie owners)
so I'm guessing it'd be the same for the Pinto.
You don't happen to have a dohc with stock flywheel sitting around do you?
Regards BV.