I would call up Dan at performance only in florida and get a SCAT cast crank and I beam rods, whatever forged pistons you can get cheapest with about a 20CC dish, probalby wiseco. If you can find some good magnum heads in the JY for cheap slap them on with a performer RPM air-gap intake from hughes that is set up for EFI. For the cam get it re-ground to about 210@.050 single pattern with around .500 lift with the mag 1.6 rockers and a 114 LSA. Swap on some GM V6-3100 3500 valve springs and retainers. Should make a TON of low end TQ. If you can not find the factory heads cheap then get witchever EQ or RHS is cheaper.