Need Help figuring out what bell housing to get

Hey Guys I have a 1970 Valiant with a 360 small block 10.5" clutch. I bought a 833 4speed OD tranny. It's retainer is 5.125". What bell housing do I need to get for this to work? Thanks for what ever info you gods can give me. Also if you have what I need and want to sell it please let me know.