Stock 87 4-bolt rear. To clarify the Misconseption (sp?) that the 4bolt is weak One thing I know for sure, our rear end IS NOT WEAK! I've seen this car, in person, last Wednesday, up on the lift. It does have the stock rear end. Not saying I'm a rear end expert but even I asked him if he had done anything to it, he said it was bone stock. He has no reason to lie so hopefully this will end the debate about the strength of a "properly maintained" Quest rear end.