Heads I’d suggest I.G. Diego in riverside, good prices for from what I’ve been told, good prices for engine work and cylinder work. If not them action cylinder heads in Santee but that’s pretty far away. Hit up HTO ( Randy) or myself if you have gear questions. HTO re-geared the family wagon recently and is fresh on pointers I may have forgotten. It’s been a few years since I geared an 8.8 vs 9”.