I have a 2002 jeep grand cherokee bad rear end mine has a dana 35 and we found a dana 44 both have 3.73 gear ratios are they interchangeable or what should i be looking out for. Ive been told they are fully interchangable and another sie says you will need the drive shaft anther says the drive shaft yoke would need to be modified and another said differnt bolt set up so we are lost need some guidance