Thanks dcarr.Never heard that about poor idle.Wonder why that is?Ya'll reckon the Mallory is a good piece?I've always had a Mallory dist,going on 10 yrs now.Never one problem.Swap over to MSD and the durn battery gets low and leaves me sitting in the lanes with no fire.My old Mallory would fire up no matter how bad the motor was dragging to start.So far,not so impressed with MSD.6al works fine,but running straight off the box sucks......big time!!