Front master cylinder drop-in replacements

[wrothwraith]

Hi all,

I've recently given my bike a once over, and noticed that the sight glass for my master cylinder is cracked.

Given that: I bought this bike new, have NEVER been able to see the fluid level in the glass, and don't want to try to replace the glass (Why replace it if you can't see anything anyway?)

Does anyone know of a 1/2 inch piston mount with a separate cup (say 2009 SV650S style):
a) exists
b) is reasonable quality
c) doesn't cost a kings ransom

I'm not interested in Flea-Baying an OEM replacement, I could probably buy new for what it'd cost me. Don't waste your breath telling me that I'm being unreasonable, I already know that, thanks.