Want change rear drum to disc on 73 500 four what do i need

[AJWatUC]

I have a stock 73 cb500 four with scary rear drum. I would like to change it to a disc but wondering what i need to change it. Im lookin for the cheapest easiet way to do it. Thanks for your insight

 

[DesmoBro]

Take measurements (or just bring along your old rear end) Motorcycle salvage yards will have more than you can shake a stick at look for a similar rear end assembly Swing arm, wheel, caliper, brake support, reservoir ....It will require minor fabrication to mount the Brake Fluid reservoir etc