I have a 85 firebird and in need of a proportioning valve i guess, it will not allow the f/r brake to work, and it will lock up, i assume the next step since replacing the calipers is this valve, will this one work you think? It sais to 84 but looks identical:

http://cgi.ebay.com/ebaymotors/82-84...spagenameZWD1V


Think it might work??? My autoparts doesnt carry it.

Anybody got an idea???