That Buick 455 is a great motor but you will be harder pressed for parts.Probably better off getting a Pontiac 455 for parts and to bolt in unless the price of it is good to pass on.
David
http://FirstGenFirebird.org/show/closeup.mv?CarID=571 If i don't get this car back on the road soon i'm gonna go postal! On a quest for FGF knowledge 1968 Pontiac Firebird Convertible 1969 Oldsmobile Cutlass "S" Convertible *Sold*