Help: WHERE can i find a replacement Proportioning Valve???

[Vettetrax]

Hello i have a 1983 z28 with 4wheel disc... my proportioning valve LEAKS! im sick of cleaning brake fluid off hte garage floor. does ANYONE know where i can find a replacement proportioning valve??? I have tried the GM dealer, classic industries, Napa, Advanced Auto, Ebay, Yearone. NO one has it.. OR does anyone know what year proportioning valves are compatible with my car?? because classicindustries has a camaro 1967-74 proportioning valve that looks exactly like mine. but just my luck its different some how im sure.. ANY help is appreciated!! thanks! Here are pictures of where the leak is coming from. I have no idea what this hole is or what its used for. but fluid is slowly leaking from it? i think its missing a plug or something i dont know.

[likeenz24]

try GM Parts Direct: Your direct source for Genuine GM Parts that is where I got mine

[JamesC]

Classifieds on this site?

JamesC

[Vettetrax]

Tried both places.. nothin.. anyone know what the hole is and why it's leaking??

[Dracul]

sometimes you can get a new one at a dealer, but expect to pay an arm n a leg for it... best place to go is a junkyard...

[Bowtye101]

Why don't you try summit that's where I got mone when I upgrade to rear discs

[Vettetrax]

for some reason the early 70's proportioning valves look exactly like mine. as long as i get a 4 wheel disc valve it should fit right?