Before anybody freaks out it's a clone LOL. It's not even a GN it's only half of a 82 regal. Check it out though I thought it was pretty cool. Not something I would do but it is original.
http://www.dieselpowermag.com/features/0710dp_1982_buick_regal/index.htm
http://www.dieselpowermag.com/features/0710dp_1982_buick_regal/index.htm