Application: Fits 55 56 57 58 59 chevy & gmc pickup trucks ; Fits chevy 3100, 1/2 ton (1500), 3/4" ton (2500) 1 ton (3500) long bed and short bed hot rod trucks, street rod trucks, rat rod trucks, etc. Description: --Mounts brake booster and/or master cylinder to the frame --Works with all aftermarket 7" & 8" single & dual diaphragm boosters with gm style master cylinders --Can be used with booster/master cylinder combo or just the gm style master cylinder --This unit is paintable (it is zinc coated as pictured) --Fits chevy fleetline, bel air, master deluxe, hot rod, street rod, rat rod, etc. --For use with automatic transmission only --Will not work in conjunction with factory clutch pedal Package: Including all items in the picture