I run a 223 with a mechanical advance distributor worked over by GMC Bubba. Use his distributor and points, the coil he recommends, and his condensors. Follow precisely the instructions he gives you to time the motor. My guess is that it will run like a top. The problem he soved for my motor? Bad electrical components that were mismatched. Let us know if you figure this out. Mine ran terribly before. Now, no problems.