You can pretty much bet your pinion nut that whatever is still left out there in a 9" has been picked over until there are no good parts left. I would either bite the bullet and get all good stuff from Currie, Moser or Tom's or I might begin lookin' at the 8.8" Ford stuff.

In the end though, it would be real nice to just phone up one of the suppliers and get a housing that you know is square, proper length and has the proper spring perches in the proper place.