Can someone please shed some light on what's going on currently with OHC6 engine rebuild recommendations? Any new sources or old sources that are no longer valid?

Mostly interested in new sources and more importantly the BEST source for '68 OHC SPRINT 4BBL source for engine rebuild. Any advice for actual mechanics for this motor in California too?

Thanks in advance. This is THE BEST site for us old timers who love Sprints. I don't have any money but I'm conjuring up a good trade in exchange for getting my '68 OHC6 SPRINT 4BBL rebuilt.