I believe they are from 00-up, but not sure....factory box. Napa sells a nice gear box....with warranty.

 

Go with the thuren, its freakin awesome!!!

 

So a 00-up will bolt right up, or are there modifications to make?

 

I am not sure what year they started installing the 3 turn boxes, but I was told that the 3 turns were installed on 00-02. The 03 uses a different box is what I was told. My friend just put a 3 turn on his truck & it made a big difference in the handling of the truck. I have one waiting at Napa for me....just haven't had time to pick it up.

 

that is pretty sweet, really nice weld they look like tig welds. and stainless i like it. i love it.

 

Solid Steel 3rd Gen conversion....no looking back. Best mod
I've done to my truck.

 

What exactly do you need for a 3rd gen conversion?

 

Or here...
http://www.sourceautomotive.biz/tbk20294024.htm