I have a 50 Ply Woodie, so it is big & heavy. Did a Power booster & dual master (with the stock drums) from Butch's some years back. Installation was anything but "Bolt-in" as the x-member needed to be notched and things didn't sit just right out of the box. Even now the pedal sits too close to the accellerator, just not close enough to bother fixing it. Anyway, the end result was very satisfactory at 60mph, whereas before any offramp with a down slope was scary.