Go to this site and plug your trucks info in and it will show you everything that you can think of to up grade your new truck. I wouldn't just look for the 1st thing that costs 1500 though. Think about what you want to do. Do you want to make it faster, make it look better, run better and then go from there. Here's the link
http://www.TruckPerformance.com
Theres plenty of bolt on stuff and things under the hood that you could do like a cold air intake or better spark plug wires. There's new grill inserts, bumpers, mirror, the list goes no and on.
Have fun!