Hi, Not sure on the brake caliper / master cylinder side other than I know that the cylider needs to move a given quantity of fluid so using something off a similar bike could well work with the standard caliper. Personally I'd scan ebay and try breakers for the right part. Exhaust wise the spacing between ports is different, and I think the headers would be longer on a 500 as the engine is I'm pretty sure taller which would leave lots off messing at the least, not sure on diameter of pipes.