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3.73 rear end (Gt4) with the Eaton locker (posi G80)
I decoded your VIN at compnine and can send it to you via an excel spreadsheet if you like.
Hmm, let's see if this link works...
http://www.compnine.com/mycar.php?id=92e3246974f0111ba88921e1a868b83f
The 3.73 is my personal favorite. I have 3.42 now, and it's kind of a dog. There are different opinions about the G80. I like it (and yes, I've grenaded one in the past). It does depend on how you drive it. If you're not nuts with it, it does its job well imo. Here's a cool video about how it works :