Hello, i have a 92 sunrunner, it appears teh fr amidships is slipping when in 4low, i am looking to get it rebuilt, how do i go about finding the correct numbers of the grannies ion so i can surf the net for a rebuild kit. The tranny has 277km on it i have used a litre of Lucas oils anti slip, it also takes some time to engage when put in reverse, 2-2.5 seconds.