I just got around to putting them on today. I decided not to go straight across the door like they were on the YJs and go along the line of the half door.
Like Boogieman said, they're TJ decals on the fender. I believe the YJ ones from the kit could be used but they are slightly different in style and size. I bought the cheapest ones on Etsy and haven't had any problems with the cheap decals. I think I put them on like 2 and a half years ago