I have a new OEM style master cylinder. It works best with the lever that came with it vs. my stock lever. However the lever that came with it doesn't match my stock clutch lever. After much research I determined that the manufacturer of the master cylinder used a Bikemaster lever. Bikemaster makes a corresponding clutch lever. I got one off ebay and now my levers match. I figured I'd post in case anyone else was annoyed by this.
The master cylinders are good. They're sold by DSS, Carpy, some ebay sellers, etc.
Bikemaster part numbers:
Brake lever - 07-0405
Clutch lever - 07-1128