Originally Posted by gaidin43
Rear leveling suspension, ... are also too expensive to add ... after the fact. ..
The leveling suspension is just a different type of rear shock. You should be able to get that at the parts counter. About the only other things OEM that may be easy to change are adding skid plates, tow hooks, tow receiver, and changing wheels/tires. 2012 added theft deterrent to the radio making it slightly more difficult to upgrade the radio. I'd look aftermarket for other items.
With persistence and money just about anything is possible.
Oh, the chrome fog light bezels are a simple swap.