Installed the pertronix 2 distributor a while back loved the reliability of electronic ignition. When stock coil went bad I decided to go for this. The price isn't too much different from a stock replacement and it has more than twice the original power. Whats not to like! Made the adjustment (clipping the pink resistance wire) when installing this coil , definitly a difference. I notice more power at higher rpms, not an extreme amount but there is a difference. She does seem to have a bit more kick when first starting as well. Highly recommend