I took a booster off from a 78 Scottsdale and had to modify several things to make it fit. The bracket was wrong, so it had to be modified. Also, in order for the booster rod to line up with the pedal assembly I had to notch the firewall where the rod passes through. The rod from the 78 was not long enough to reach the pedal assembly, so it had to be lengthened. And finally, the shouldered bolt that holds the rod to the pedal assembly was too large in diameter to fit through the rod for the 78. I had to grind the bolt hole slightly to allow clearance. Like an idiot, I never tested the booster before I did all this and it turned out that the booster diaphragm was leaking, so it all came back off. In short, this swap was a complete whore. I'm sure others have had much better success, and other years from 73-87 may have different brackets, rods, etc. Good luck with whatever you decide.
