I will be replacing the hydroboost on my truck today. Any tips?

99 F250 SD PSD

 

Having never done that particular job myself, I am not aware of any booby traps involved. Just make sure that you deplete the reserve pressure in the system by pumping the brake pedal with the engine off as many times as it takes to run the pressure down. It will be unmistakable, the pedal effort will go way up. The hydraulic pressure inside those things will squirt out with enough force to cut your skin.