The panels do wrap around the tail light section, but the front edge does not go into the door jam.
I would think you could easily run some rubber welting around the perimeter of the part for a finished edge and create dzus mounts for them fairly easily. I have planned on glassing them in, but I may even end up going the dzus route. (I'd do the rears similar to the mounts I did for the front fenders.) That way if I mess anything up it's just dropping a new panel onto the truck rather than replacing the whole side of the tub and repainting.
The problem I have is my bumpers wrap tight around the current body so I can't fit the panel through the gap between the bumper/body. (You can see it in the pic) The rear bumper is welded in permanent as a part of the rear suspension (shackle hanger mount)
I was looking at it last night and I might just shorten the ends of the bumper so they don't wrap around as far and re-cap them. It's not like I'm going to rock-crawl this thing.
Saying I can't wait to drive this thing is an understatement. Coming up on 6.5 years of ownership and I've never driven it, I forsee a couple more years before it's on the road. Ugh.
With High's now in the teens for the next week, no work in the garage for me right now. I hate it when my hands freeze to my tools.