Yeah i read that tecj article
And what do u change the tank for? Or pulley? Y would you do that
The hydroboost unit, the brake peddle and the master cylinder are what you want. Our vacuum brakes have 1000 lbs of pressure available to stop us. The hydroboost has 2200 lbs to stop us and they use a 1 5/16 master cylinder. Its a great addition to our trucks. Remember this.... No amount of pressure can stop an overloaded truck. The size of the brakes can only do so much. On a true hydroboost truck the brakes are huge because of the additional load on them.