I have a 84 323i that i just had the head rebuilt. I gave it a mild port and port matched the intake manifold. My question is if anyone has ever used an adjustable cam sproket on a e30 motor? What were the results,where was it bought and was it worth it? Also I've read that changing the injectors to that of a 325i's (more flow)and changing the air flow meter from I believe a 528e would give me a better breathing motor. Any comments or suggestions(short of swapping lower end)will be appricated.