i got mine off of a 88- early 90's model. and i have a spare one from the same year sittin around some where. you will have to cuz off where your pedal mounts to the booster and weld it onto the astro one. or your brake lights and neutral saftey switch thingy wont work. i cut both ends off the boosters, and found some small steel tubing, slid it over the hydroboost, then welded my old pedal mount on there, then slid the tubing over and welded it on, just to make sure it was good and strong.