I think they have their own proprietary pattern but you can get them with a 4l60 or a nv3500 behind them so you have ok options either way. Im surprised nobody makes a adapter housing yet.

Besides these guys. That was some major work but they made it happen and i like that.
Atlas bellhousing adapted

Last edited by Barnfind49; 04/12/2020 2:50 PM.
1949 GMC 150
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