I bought the same kit from MW last year. I haven't even looked at the doors yet. I would suggest making sure the double flange the arm connects to on the door jamb is strong, as I've see several of these broken off and had to make on for one side of my cab. If that piece breaks, the door may impact the fender, leading to the use of strong language.
-John
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
I made my own pieces. I don't think MWM had them available at the time. It was really pretty easy to put them in. I just drilled out the spot welds that held the originals in place, and plug welded the new pieces in place. I also used a 1/4" bolt and nut in place of the rivet to attach my NOS door check arms to the Door jamb brackets. If I remember correctly I had to trim the excess length off of that bolt for it to fit into the door. My door jamb brackets were pretty mangled, and had some ugly repairs that had been done. They looked pretty good when I was done.
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
They can be hard to find. Sanding the paint off in the area may help. I also had every thing out of my doors, and had them on the work bench where I could see and work a little easier. I think I ended up needing to persuade them out a bit as well with a hammer and junk screwdriver.
I worked on the door some more tonight. I was able to drill out the remaining spot welds. They were not exact so I had to hit the bumper with a air chisel to get them out. Since the door was stripped I was able to get a 2" sander inside the door to clean up the spot welds so the new bumper would fit flush. I then welded in the new bumpers, sanded and skim coated the spot welds.
Old bumper removed
New bumper from Midwest Military
I added extra holes to get a better weld on the tab.