Okay, the ad I'm referring to is this:
Dana 30 Detroit Tru Trac w/ 4.88s
It comes with everything needed to run it in my Dana 30 (Detroit with 4:88 ring gear, pinion gear, yoke, carrier straps, and carrier bolts).
My Jeep is a daily driver, but I also live in an area I'd like to do some off-roading, dirt/sandy trails and such. I will also use this guy in the snow when I go to the mountains.
I just figured that the TrueTrac is better than what I have, and I'm looking to regear my front to 4.88 anyway, so this might be a good deal. I'm running 33" tires. I already have 4.88 gears for the rear to install.