All this makes sense and was what I thought was true from the beginning of this story, but I had to check to be sure. Here's the skinny, it turns out the 73 Granville 2 dr Sport in question was built with the 73 455 HO (?) Police Intercepter motor, TH400, factory dual exhaust and 3:23 posi, not the SD. Bummer. Although a really nice car in it's own right.
Thanks for everyone's input, there sure is a whole lot of knowledge in here isn't there?!
John
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