Unexpected first mod! I just placed an order through my neighbor, who is a manufacturer's rep, directly with Motive Gear for a 3.90 ring and pinion, Detroit Truetrac LSD and install kit for less than retail on the Truetrac. I have a good install shop lined up. Of course I will need a flash for the gear change, and there is a tuner is about a mile away from the house;
http://www.sho-mespeed.com/. Probably will have him juice it up a bit while he's in there...
The neighbor also reps LKQ, told me to pic out a 6.0L ; )