I had a 73 D200 "Camper Special" Club cab. It came with a 400, 727 and the HD suspension with the 5/8" studs. I also had a 75 D200 Camper Special that came with 5/8" studs, that one was a 318 727 standard cab truck. The 78 Camper Special had 1/2" studs.

I believe it really depended on what box was checked on the truck order blank.

I've been involved with the D/W 100, 150, 200, 250, and 300 debate before. I'm not going there again. Gene