Thinking out loud here...

Saab braking woes got me wondering a bit about the Chev discs and not locking the brakes.

 

Can you remember if the first master…

http://www.flickr.com/photos/johnandkath/11067382964

 

Had a larger rear bowl than the installed…?

http://www.flickr.com/photos/johnandkath/11067806103

 

The DBMC05 is the disc/disc master from Right Stuff…

http://www.getdiscbrakes.com/dbmc05

 

I *think* this is what is on the car…

http://www.getdiscbrakes.com/dbmc16

 

Ref.

http://www.mbmbrakeboosters.com/index.php?option=com_content&view=article&id=7:master-cylinder-faq&catid=2:brake-boosters&Itemid=10

 

J