I just replaced my cap & rotor with the Accel heavy duty kit. Immediately after I did this I noticed my stereo now has a constant buzz and random pops, sometimes it will also make other longer, louder noises that are quite unpleasant to listen to. It is also had enough that the head unit will interpret the interference as signals from the remote and activate random buttons. With the motor off it sounds and behaves fine and the one and only thing that's been changed is the cap, rotor and button. Wires are a new mid grade stock replacement and I run Delco plugs. I'm a bit disappointed because the Chinese cap & rotor the distributor came with new had none of these issues for the 8+ months I had and regularly ran them on the car. Motor is the stock 305 with a replacement vac advance HEI distributor off eBay.