So I just moved to Santa Barbara and am looking for fj40 people in the area. I have a 1972 fj40 that I have been getting together for the last 6 months or so. I havent done much with it yet, just brakes tires wheels, oil, had the head machined, new water pump and radiator, rip the top off and drive it. But pretty quickly after it warmed up I realized it has a pretty bad knock coming from the piston nearest the firewall. So I have been debating trying to rebuild the f engine or go all out sbc 350 nv4500. what do yall think?