Now maybe the OP can find an older guy in the back of the local NAPA store who operates at a slower pace and doesn't mind futzing around rebuilding 383 rods and putting new seats in some old 906 heads. Those guys are around but you have to search a little bit to find them.
I don't mind putting seats in 906 heads at all.
I'll be shipping out a nice set of rebuilt 906's today that are destined for a Daytona Charger.
More $$$ than RPM heads....... But these are really what should be on that car.
I don't mind rebuilding stock heads at all....... But it's often not the least expensive path.
Just because the heads are old doesn't mean the shop labor rate is any less.