Looking for 8-3/4 suregrip rear for my A-body

I had one listed here for $750 with a 3:23 Sure grip.....Lucky for me no one bought it! A local guy offered me $450.00 for just the housing & axles, so I sold it. When I pulled it apart, the 3:23 was actually a very clean 3:55! That may be for sale, but not for a couple hundred dollars! I have it on eBay for $400, it it does sell it's going in my 70 Runner!! 8)