i've got a 65' GMC 1/2 ton. im in the process of rebuilding the whole truck to be basically a lowered muscle truck. my question is if i should swap out the six lug gear when i upgrade or keep it. im buying a new dropped spindle/ disc brake kit that comes in either five or six. the truck has stock 15x8 ralleys that i wouldnt mind keeping on the truck,for that sleeper look. or i've got a set of five lug mag wheels in storage, thou i dont know if i'd like the way they would look. the rear is a dana 44 with some kind of posi. it works good except when you get above 40, then it howls alittle, but only on acceleration. i'd like to finish off this truck as cheaply as possible. would it be cheaper to figure out whats wrong with the dana axle or find a five lug outta something and swap it over. what could make the axle howl like this? the gears look fine. what do you guys think?