[QUOTE=mmerlinn]You can't put the wider sprag in the narrow housing. You must change both.[/QUOTE
Yes, thats why I bought the wider center support housing. I actually got the used inner race, and a sprag too. I don't know why the narrow one was in this 1991 transmision, but I had bought parts assuming a 91 model, and was a bit confused when it had some unusual parts inside.