Well, was good while it lasted... Started out the other day, it was doing good. Then intermittently started developing a misfire at highway cruising speed. Idle and rev was ok. If you held it at about 17-18 hundred RPM, it had popping noises in the exhaust. Checked everything else, was ok. Popped the cap off and found that the plastic trigger wheel was either distorted or misformed due to the heat. It had distorted enough to start having contact with the optical light sensor, which I figured threw off everything including the timing. So, I re-converted it back to points and lost the problem. They really need to make that wheel in some sort of metal. Well, I guess this product works for some, not for others, but anyway, I had promised to let you guys know. I see HEI in the near future.