How do I find out which master cylinder I have?

[dandingo]

I found out there's two choices. How do I find out which one I have? I need to get one ASAP and I can't take it off just to see what kind it is since it's my daily. Thanks!

[dandingo]

Does anyone know??

[SpecM]

-Im pretty sure its stamped on the casting. They might even be interchangeable iirc

[jflip2002]

Castings are interchangable. It'll probably be a partial, though. Which is fine, you just gotta have it interchanged.

[dandingo]

Which one is the cast iron? I believe it's that one....