so one of my friend's dads has offered to trade me his 70s powerwagon for my chevy 2wd and one of my mustangs. i'm not sure exactly what year it is, but it has the circle headlights. its got a 6 inch suspension lift, and a 6 inch body lift ( I KNOW I KNOW) with 42 inch iroks. its got a 318/727 and d44 and not sure about the rear.. i think its a 8.75? if the trade goes though, i am having him remove the body lift, i may put like a 2 inch body lift in though. i am going to go with some 38s.. my question is, how strong are the d44/8.75 combo? i know the d44 wouldnt ever hold up in the rocks, but around here its mostly just mud and a couple cool trails. i'm not really too worried about the front axle, i dont ever put a whole lot of stress on the front end anyway with my driving style. i'm just wondering how well that 8.75 is going to hold up in the rear? i'm probably going to weld the spider gears up, since this wont be a daily driver, just something to play around with. The body and frame are extremely clean, no rust anywhere. (it has been garaged most of its life) is there anything i should watch for? what i have noticed is that the 318 is GUTLESS trying to push that big ole truck with 42s and 4.56s down the road. lol. barely got up to about 50 going downhill.