I just installed a 'Pop n Lock' electric tailgate lock on my 99. It works great! I had put a Lund tri-fold on and built a partition that slides into the bedliner grooves. I wanted a little bit of security for that back area. The lock works with my remote. How good is that? I put the little 'Tailgate Lock' sticker right under the handle so people don't yank on the handle when it's locked. BTW, lube up that whole latch system even if you are not putting a lock on - the tailgate latch will work so much better, you'll be glad.