Re: which wires do I keep?
I started with an 85 CJ7 258 and now it has a fuel injected 350. I retained 12 wires from the original passenger side of the terminal block on the firewall. The other side of the terminal block is for the headlights and horn.
I dont know anything about the 304 but cant imagine it needs much. Get rid of the stock computer.
retain at least these items...
Starter & coil wiring
heater motor wire is also in the engine compartment
electric choke related crap?