Welcome aboard Jeff! The 3.8L (230) OHC6 uses the same bottom end as the Chevy in line 6. '68-9 4.1L cammers are all Pontiac. Either mill is a dependable choice. There is more of a market for the Sprint parts, patience is the key for most of the humble base motor parts. There out there since most OHCers get swapped for V8's.
Your lucky to be on the west coast. You have better access to the cammer gurus Quenton and Brent. Good to know the Pontiac OHC L6 isn't scaring you off.