I just used Fairchild door seals for some fixer-upper half doors and it went fine. They seemed good quality material and properly fit the door and after installation. The door seals nicely on the Jeep.
I knew I could use the original plastic track with this product (If I'd remove the pins in the new weatherstripping); however, one door's plastic track had started to come off on its own so I pulled the track on both and drilled for the pins. Marking where the drill for the pins was tricky, but not impossible.
Here's the process I used:
1. Pull off the original plastic strip. Leaving the foam adhesive in place at this point is optional, but I found it helpful in marking drill spots.
2. Get both ends of the new weatherstrip mostly in place and get the pins that line up with existing holes in place, but not fully pressed home.
3. Go to the pins without holes and mark either side of each pin with a pencil or sharpie. (This is why leaving the foam adhesive on the door helps when you do this.) You can draw the center line from hole to hole to keep it all in line.
4. Hit the places to drill (between the marks you made for each pin and on the center line) with a punch or dimple the spot so your bit doesn't walk.
5. Drill.
6. Heat the foam strip with a heat gun and use a plastic scraper to roll the old adhesive off. Scraping perpendicular to the foam and not in-line with the foam worked quickest for me.
7. Clean up the remaining adhesive more if you want, probably paint the drilled holes, but now you can press all the weatherstrip pins home.