Brake proportioning valve replacement

[Dougviii]

Am I going to have to drop the engine to replace the brake proportioning valve? Anyone with experience replacing the brake proportioning valve have any suggestions?

 

[unity]

Drop the engine? Where the hell is is located exactly? I thought it was in the fender, but I never touched one.

 

[Dougviii]

It's on the frame rail behind the steering column wiring harness and exhaust manifold about 10 inches below the master cylinder, I thought about pulling the master cylinder loose and going at it from the top but I don't think there's room to to get at all four brake lines from the top, I have the car on jack stands and I think I'm going to try to unbolt the K-member and see if I can lower the engine enough to get at it. Any other suggestions would be appreciated