And here is another link that will help.
http://67-72chevytrucks.com/vboard/s...d.php?t=610917
Link to the FAQ section.
http://67-72chevytrucks.com/vboard/s...d.php?t=559678
BTW, a member on here CaptainFab, another great resource on this forum BTW, makes an adapter bracket for mounting a booster. I don't have that booster, but I did buy a couple other things from him, and they are top quality. Highly recommend buying from him and other vendors on here for any future purchases for your truck.