Just ordered this from GMPartsdirect and ended up not needing it.Brand new in the box unopened.Factory GM Master Cylinder.Will sell for $110 Shipped.
Check out my Ebay Feedback User Name: Y2K2Z28 for reference.Pics on request.
Thanks

 

TTT Need to sell.

 

clutch or brake master cylinder

 

I'm guessing brake...Sig says "A4" and "Yank ST3500."

 

that would make sense thanks

 

maybe it's for his 98. either way, if it's for the clutch, you guys will have to get in line