If he is looking for 'F' heads, he needs to do some research and be prepared to open his wallet! I would suggest that he first get the '442 by the numbers' book from
Supercars Unlimited . This book is well worth the money. One thing that needs to be verified with 'F' heads is that they have the correct 6 digit casting code on them. I have heard of more than one set of 'E' heads having the bottom leg ground off to make them look like 'F' heads. Good places to start looking for parts would be
442.com and
Realoldspower.com (warning on ROP-- you need to have a thick skin in that group!

) The last I was hearing, 'F' heads were going for $1500-2000 per set and they needed to be looked over/rebuilt. The W-30 aluminium manifold is being repoped (not very well) and the W and Z exhaust manifolds are being repoped as well (questionable quality on these pieces). If he is looking for fiberglass hoods, Thorton Reproductions are the gold standard if you don't have an N.O.S. piece. For suppliers of Olds parts,
Fusick and Supercars Unlimited are two Olds only suppliers that have sterling reputations.