I can't weigh in on the latter, but I can say the Mallory is a very nice piece for the price. I pulled the module and advance components out to convert to a Hall Effect sensor for my fuel injection, but the billet shaft is very high quality. I'll give the Mallory the :thumbup: Ed www.edgesz28.comacr said:Any one had any experience with either of these HEI distributors? Good, Bad, Ugly??