I've got the March single belt serp, and the double belt serp conversions... What "angled bolt" are you talking about? IN both cases, they have driver's side inlet housings, and no fitment issues because of that. In fact, if it's a single belt serp kit, and the inlet is on the pass side, you may have interference issues with the Powermaster type Alternator and AC. There are no aluminum versions of the RH inlet. And I wasnt thrilled with the 440 source water pump housings.