I'm working on a disc brake conversion for my 54 3600. It may be an 8 lugger, but I can't see any reason why it wouldn't work for the 1/2 tons. I'm using a 13" rotor and the caliper is the same as what the 99 and newer 1/2 ton trucks use. I can't see any reason why it wouldn't be adaptable to the AD 3100 trucks.

I can send some pics if you want.

Chris

1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket