I am running a newer style booster on my truck and it works great. As Brad said you have to trim the bottom corner to clear the steering column mounts on the firewall and extend the rod. I also had to drill the upper mounting holes in the booster bracket.
I went a step further this winter and trimmed off the top of the bracket because I didn't like the way it stuck up above the booster.
The only drawback is that the brake pedal in our manual brake trucks is a "long throw" (not sure of the correct term). In a newer vehicle, you only have to touch the pedal to feel the brakes grab whereas with our stock pedals, it has to move a fair distance. Once you get past that first 1/4 of the pedal movement though, the truck stops great.
Good Luck.