I can vouch for Mongo here. This is a really nice setup!! It has made his Banger run quite a bit better than before. He is going to dread the day I get my GMC together! (rib rib) Way to go Mongo!! Nice job!! The idle on this is smooth as silk and seems to have really good power well up to 4 grand! He gets nervous after this point. :-) It really rolls along with the T-5 and later rear axle.