I was going to do my brakes next week, and I want to either rebuild or replace my master cylinder. My current mc has a disgusting reservoir, and in addition to that I don't know if they sell master cylinder reservoir seals (can't find them or a new reservoir). For only $20 dollars more I can spring for this new one, which appears to be aluminum and has a clean reservoir. Any experience with build quality, longevity, etc?

http://www.napaonline.com/Catalog/Ca...608_0358743885