1971 B300 Drum to Disc Conversion
 

I have a 1971 Dodge Sportsman B300 (8-lug) motorhome with single rear wheels and 127" WB.
It currently has front drum brakes I want to convert to disc.
It has a GVW of 7700 lbs.
I am wondering what years and models of donor Vans or Trucks I could use for this conversion? Can I use any 8-lug spindle off a dodge van or truck (71-93)?
From what I can tell, I can buy all the parts except for the spindle, should I just get a spindle and buy the rest from a parts store?

I realize this is nearly a 10 year old post/question, but in case some one who has the answer sees this I could use the help! I also have the 1971 Dodge B300 Sportsman and need to convert my front drum brakes to disk breaks. I have no idea where to start. Thanks!

Disc brakes, front
 

1978 rotors/ calipers etc will bolt right up, however you will have to change upper and lower control arms as well as new soft lines. Hope this helps