Anyone know where I can get a locking tailgate handle for my 1998 1500?

 

To the bottom of the page they have Pop-n-lock, looks like you need part number PL1050. I heard about this website from these forums about year ago.
http://www.everythingoffroad.com/

 

Stylintrucks.comhas a bunch to.

 

I got an auto locking tail gate locker that lockes when the truck is locked and it is completely enclosed within the tailgate. It was like 80 bucks and was really easy to install. Just read the directions on which wire to tape into by the drivers door. The hardest part was runnung the wiring down the frame to the cab. It also has a quick disconnect for when you need to take the tailgate off of the truck.