I'm trying to make an OBD-2 harness work with a 99 magnum 5.2. I've basically got the wiring figured out, but haven't gotten to the point where I can hit the key yet. If that doesn't end up working well I can try to find an easier to work with OBD-1 computer/harness. If you're only going to be running a stock or near stock motor, that's all you need.