Call Dennis Waldron at Waldron Auto Parts, LaVergne, TN. 615-793-2791. If he doesn't have an old Pontiac engine like that, he can probably steer you to someone who does. His salvage yard has been in business since at least the late 1950's, possibly longer.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!