Can I ask what the purpose of hydro boost is for anyway???? I see absolutely NO reason whatsover to use hydro boost on this Wyle's truck. Hydro boost is used in vehicles that do not have alot of vacuum, like diesel engines, hotrods with big cams, and possibly the reason why a 1tons get hyrdro boost even with a gas engine, might be due to the intent of towing heavy weight and if you are full throttle or heavy throttle the engine may not be creating enough vacuum to operate vac boost. I do have a hydroboost system on one of my trucks that was oriiginally diesal, and I am keeping only for the reason, that vehicle is likely to end up with a biggo cam in a 455 Olds Big Block. But, I actually prefer to find a manual steering box, and manual brake master cylinder for this vehicle and not use a booster at all. The other vehicle that was diesel, I easily converted to Vac Boost becasue the hydro boost was not necessary at all and it was leaking badly. And I will agree with Vans 100%, not only cuz she's hot, but cuz she is right, and I will only make 1 exception to her statement. You do not get brake parts from a junk yard. Even if they look good, you have no idea how long that vehicle has been sitting before it got to the junkyard, and how long its been sitting in the junkyard. Seals harden and dry out, as do brakes hoses etc. Now it may have worked fine on that vechicle, but now that you disturb the part by removing it and reinstalling it, you could have disrupted its integrity severly. My 1 exception is a Vac booster. Its rare that a Vac boost goes bad anyway, they are in a self contained drum of their own, and the internals are enclosed from bad weather. When I converted the 1 truck from hydro that was leaking, it was gonna be $270 for the hydro boost unit remanufactured with 1 year warranty. I went to Pull A Part, and picked the cleanest, newest looking Vac booster I could find, and got it for $15, used the same master cylinder, bolted it on, and works perfect. Even much better than the hydro boost ever worked.
Why I would not change to hyrdro boost UNLESS I had to for good cause, #1 Very expnesive units compared to Vac. #2 Many more seals and pistons to fail, so they do not last as long as Vac Boost Units, #3More hoses to purchase and clutter your engine compartment. #4 Have to upgrade the PowerSteering pump also not cheap, #5 Your ps pump goes bad, you not only lose steering, you lose your brakes, (Not literally, but very hard to operate and if you're not expecting it??) If you motor is running, you have Vacuum always in most cases. #6 You get a broken or leaky hose, same as #5. And more, but you get the point. Save your funds, and do as you originally planned. Turn your rotors, get the new better pads, and be done with it. Unless you feel its time for new calipers and rubber hoses too. But no, avoid the Hydro Boost. You too Dave. I don't consider it an upgrade at all, and it certainly isn't cost effective for a light duty truck UNLESS you have a Diesel or a Big Cam street/strip truck. Sorry for the long read, but I felt its an important one. Not only does your life depend on it, but you may be sharing the highway with my family members, or members from here too. I just feel its safer to leave it as is. JMO