Your question is asked all the time, and apperantly never answered adequatly. A high power V-8 is going to need stronger axles in just stock form. I think i've seen the picture of your jeep with a decent lift and 33-35's? If you have tires that size running 4.11's to 4.56's and a V-8 and rugged mountain trails? Dana 44's in the least, maybe a ford 9" or dana 60 rear end, and at least a dana 44 front. Un forntuantly its going to cost some cahs to find the right sized ones, or have some made to your specifications. With how short the wheel base is, you might want to consider lengthing the wheel base a bit for stability and driveline lnegths. Usually low budget's don't go well with V-8's and big tires.