Yup, I've heard that story many times. A friend of mine has a 1972 TransAm. Sometime in the 80's he needed the transmission rebuilt. He had it done at AAMCO and paid their high price. It's got a lifetime guarantee. He doesn't drive the car anymore, he's just keeping it "forever" but at least once a year he drives it to AAMCO for their required yearly inspection. If it every does go out again they will be rebuilding it for free.