Post by
Desert Rat »
https://forums.nicoclub.com/desert-rat-u54558.html
Fri Feb 09, 2007 12:10 pm
If you get the 2004, look for a finned aluminum diff cover on the rear diff. Walk away if one's not there. That allows an extra quart of gear oil to be dumped in and keeps those diff temps down...heat kills them. The rear diff is a variant of a dana 44 rear, and is a bit light for 300+ horsepower, but you should be fine as long as you're not regularly pulling big trailers. Earlier models also had issues with warped front rotors, which would be compounded if you add larger rubber.
I believe the 2005+ trucks all got that diff cover.
Aside from that, there's only one engine and transmission combo available, 2wd or 4wd, and King and crew cabs. 2008 will add a long bed crew cab version, and a diesel truck is on the horizon, though it's not officially announced.
I have 2 close friends - one with a 4x4 and one with a 4x2....both are good trucks. Both are '04 models and both have had the front rotors replaced, but it seems the replacments they're using are better. Hence my advice to stick with an '05+ truck.