I just got my willwood adjustable prop. valve. I did read the install in the tech area. That article is very old and was hoping there was some updated fittings I could buy instead of buying flare kits and fighting with the lines. My car is a 89 iroc-z with factory discs on all 4 now with C5 brakes up front and a hydraboost system. The willwood valve has 1/8-27 NPT to 3/8-24 inverted flair fittings that thread in. I was also going to gut the factory prop. valve and just use it as a t-fitting.

The reason for install is my car locks the front brakes up long before the rear brakes do much work.