Suzuki 2 Strokes

Just discovered that the front brake master cylinder on my '96 RGV VJ23 needs new seals and piston. I know there is a rebuild kit available, but my local parts guys are having a hard time cross-referencing the correct kit part #. I know that the master shares its internals with a host of other bikes. It's a Nissin, which was used on most sportbikes of a similar size during that specific era. All my NSRs and TZRs use an almost identical unit, differing only in a couple of exterior specs for reservoir mounting, etc. I believe that they are 14mm bores. Any help in finding a US part # or a cross-reference # would be greatly appreciated. I don't want to spend $60+ for an overseas purchase for a kit that should cost less than $20. Thanks