I just finished my LS swap and I'm pretty sure the rear end is about to go. When I'm hard on the throttle and it down shifts from 2nd to 1st and starts to pull I get a violent shake it almost feels like wheel hop. I was told my best option is to find a 12 bolt? And then do the gears and axles so what I need to know is what vehicles I can find this rear end in? I want to stay with drum brakes to fit my 15" wheels.