The Stovebolt Site Forums The Parking Lot Big Bolts Disc brakes for 1.5, and 2 ton trucks

Yes, there are kits available.
1947-1955 Chevy/GMC Truck Power-Disc 6-Lug Brake Kit, but you need to talk to the vendor to make sure they'll fit your truck.

Axle swaps are always possible. My '48 has an '80 Firebird disk brake rear (3.73 limited slip), so I have four wheel disk brakes. I used a conversion kit for the front.

I would not use drum brakes on your truck, especially not the Huck brakes that it came with stock. I would recommend four wheel disk brakes for your application.

Finding axles is a matter of measuring. to make sure it will fit your truck. There may be someone on the board who's already done the swap for a similar truck, so keep asking questions.