You can check these out from LMC Truck.
http://www.lmctruck.com/icatalog/csd/full.aspx?Page=53
I'm sure you can probably find cheaper ones on eBay.
I also purchased a set of the LED taillights on my '01 Ram a couple years ago from LMC Truck and they are pretty bright. I had one issue with mine because the lights warped for some dumb reason but I never did anything about them as long as they still function perfectly.
