I had four 904 failures in a span of about 8 years, every time the fix was a 727. If I was to venture in that direction again, why on earth would I take another chance of a 904 failure when the fix is pretty easy, especially on a street driven car? Swapping out automatic transmissions because of too light design failures is never fun. Installing a 727 into an A body is a bit more work, but usually once its done, its done. That extra effort up front is easier then a 2nd or 3rd 904 swap.