Newb question.... I can replace the stock aws with this 4 bolt right? My stock aws is missing one part that is no longer made and I've been having problems finding the part for it. And most of the aws lines are rusted out. From what i read, to reduce the cost of having headaches with the lines, getting a 4bolt rear end would eliminate that right? Whats your input on that... ?? My knowledge is not great with my gvr but I really want to drive it and that last obsolete part of the aws is leaving me hanging.