12V Cummins Into An A Body

Not sure about an A-Body, but here is one in a 70 Monty Carlo.

My guess is that you would want a full frame under it.

[ame="http://www.youtube.com/watch?v=RO_kjaxIDzc"]1970 DMC Diesel Monte Carlo '99 Cummins turbo 24 valve - YouTube[/ame]

And a Chevelle

[ame="http://www.youtube.com/watch?v=KhgXSlEFncw&feature=related"]Duramax Chevelle 11.6 at 120mph - YouTube[/ame]