1967 Chevy 1/2 T Custom Camper

[carnut64]

I was curious if anyone knows how many '67 chevy half ton custom campers were produced? I just bought a 67, 81000 original miles, its a plain jane model, manual steering, manual brakes, radio delete, 327, TH400. I noticed that it had custom camper on the fenders instead of c10, so i figured that it had 3/4 ton front fenders, but after doing some research, I found that they did indeed make a 1/2 ton custom camper, which had heavier rear springs, over loads and a front sway bar, which mine has. any info would help.