I have a 75 xs500 that im putting 77 RD400 mags on and was wondering what all i need to do to go from drum to disk? i know the rotors are the same and the axel is too. but what i was wondering is do i need to make any mods to swingarm or can i pick up the odds and ends ( caliper,brake hanger, and master) and set it all up just like a RDs rear brake set with the tabs i have ?
