My stock hydroboost has been leaking for a while, so I bought a new AC Delco LML booster, new pressure lines, and some Redline power steering fluid. I just finished installing it all on my truck last night. Everything fit fine except for some reason the hole in the push rod was just a hair too small and it wouldn't allow enough travel to push the brake light switch in enough to break the shift interlock circuit. The brake lights worked, but I couldn't get it out of park. I had to drill it out just a little to make it work. Other than that, it stops great now.