Rich,I agree with your statement for the most part. The only thing I have seen with them is a couple of situations where an ignition system was not happy with the signal the pick up coil was putting out. The MP distributors and stock replacements use a low resistance pick up coil,the MSD uses a higher resistance one. I have seen a distributor change totally screw with what is going on with an ignitions signal. That is why I wondered how yours compared. Keith
