[Double Venom]

Ah.... If I may- do away with the multi use PIA. Order a "Adjustable valve from Jegs, summit, MB Brakes, Autozone, etc. put in the main feed to the rear brakes, mounting it to the firewall. (Very, very) simple/clean. Open it fully when you start your test drives then close it slowly at first until you can feel the front end just dipping. Then with your harness fully attached and mounted go , oh, about 20 mph and lock up your brakes-hard! when you have the system adjusted and installed properly all four brakes should lock without throwing you through the windshield!

Just a thought..
DV