I guess I didn't ad enough clarification to the original question, though some of the responses were salient. I assumed that everyone would know that the adapter I was talking about was from an AMC 304 to a TH400. The Buick engines were mostly done by 71. So, to review, the AMC V8 to GM TH400 adapter was only used with an odd GM TH400 that did not have the standard GM bellhousing pattern. Instead it had an "export" pattern? Bummer. Thanks fr the clarification, Jesse __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com