I Googled it. Amazing what you can find. 1968 Pontiac GTO Ram Air II, 400, manual transmission.
Before you spend money, check out a Pontiac site or two and see if this is rare at all.
For a rebuilder, I'll continue to recommend Dan Sarvis (
Wblue70@aol.com). Great engine and carburetor man and an Olds driver and racer to boot.
C.J.