[rsavage]

One of the things to watch out for in changing boosters is the different stock brackets are not interchangeable. The shorter firewall bracket is used with the fatter but smaller diameter double diaphragm booster most often found on 3/4 tons and and 1/2 ton 4X4's. The longer bracket goes with the single diaphragn (thinner but larger diameter) booster found commonly on 1/2 ton 2wd's).