7200# GVRW Package
like wandell said bigger rear not sure about the tranny for the 04-08's but my dads has a 10.25" Rear end if i am not mistaken with 4.10's better shocks and another overload spring and the shifts are little firmer there might be more that i am not sure of but thats all that comes to mind right now 
its an 05 its an extended cab but the same concepts apply

its an 05 its an extended cab but the same concepts apply


