So my builder called me and said he needed my master cylinder. We put 4 wheel manual disks on it. They say I need the linked master cylinder to have proper line pressure and pedal feel, but 200 dollars for a master cylinder about made me choke.

Any suggestions?

http://www.wilwood.com/MasterCylinders/MasterCylinderProd.aspx?itemno=260-9439

Try this at Mancini

http://chucker54.stores.yahoo.net/24whdibrmacy.html

1/2 the price

Look into the parts store aluminum Mopar replacements and the aluminum adapter available from a few vendors here, including, I believe, Zippy.

I put a Cardone 1820, 1821, or something like that on my OEM manual disc/drum set-up on my race car and it works well at the track. That application is for a manual disc brake Aspen/Volare. Forgot the exact year. But with dual disc brakes, you may need to go to a manual turck master cylinder because of the extra volume in the rear brakes.

Some others who have more experience with your combo should be able to offer more details as far as M/C choices and adjustable proportioning valves. Street use would make it more critical to get it "just right".