So check valve, 3/8" vacuum hose, bolts and everything else will fit. I have a 1986 F250 4x2 with a 460 engine. Now I need to adjust the stem from the booster going to my master cylinder see if it creates more resistance in my brake pedal, not much of that at the moment.And replace the brake switch at the same time as installing this booster, just carefully adjust the position until the taillights don't stop burning when you turn off the engine.