Hotter spark = good enough for me to buy 'em. Plus they look good. People bash the MSD Coils like they are a money wasting product. I say NOT. Just to put it into perspective if someone says...You LOSE 1 hp by installing the MSD Coils...but the person that doesn't have them might have a 1/2* of KR and lose 2.5+ HP...so I really don't see the fault in it...but to each his own.