calipers

Looking to see if there are any other calipers and master cylinders that would fit/work on the XS400 maxims, the current one sorta sucks, and i cleaned and replaced pads already

Have any of you guys found another caliper which will bolt up to the stock mounts on a 81 model? I'm having to get a new master cylinder so I figure I might as well juice up the stopping while i'm there.:shrug: Thanks, -Jeramy