Hands down the safest answer is the OE replacements for the 06-09.
If you want to save a few bucks, and still not **** with sketchy taillights, get the Dorman versions which are decent enough. They're plug and play on the 03-05 trucks, use LEDs for the brake and running lights, and zero visibility issues with that design.
So to be clear - you mean the tail light bulbs/ LED lights correct as opposed to the tail light housing?
That sounds great. But are you sure the 06 to 09's would also fit the 2003
Thanks