Hey guys, i just installed a 95 toyota truck booster and master. Works great other than the rear locking up, so i need a proportioning valve. Rear has drums still btw. Here is one from this website. Scroll down to the bottom and you will see it. However it has npt 1/8 threads, but mine are 10mm metric. They sell adapters, can someone tell me how many and which adapter fitting i need, thanks alot.