[Impala64ssa]

A friend had a basic Firebird with the OHC 6 and a stick. Not a bad runner and odd enough to possibly be collectible
The Pontiac OHC 6 was basically a modified Chevy 6. They were also available in the Tempest and LeMans for a few years. They were actually very good engines, the trick was to replace the timing belt every 40k miles. It's a PITA, but those belts are still easily available.

[CrazyIvan]

Did not know it was a Chevy variant. I remember how exotic OHC seemed at the time. Since then I’ve owned OHC, DOHC, and a Ducati with Desmodronic OHC.