Booster, Master & Prop Valve Kit: 8" Booster Double Diaphragm - unpainted Read below also

Read below also

This is the later model seal replacement for the 77 & Up 403

for the various Chevelle & Nova series

Used on both the original square and round style bars

This is the Stencil for over the front header

Booster, Master & Prop Valve Kit: 8" Booster Double Diaphragm - unpainted Read below alsoREAD THE "DESCRIPTION" section on LHS lower page: Brand new full kit that hangs off the firewall .. good for restricted space engine bays.. a double diaphragm booster and dual master with proportioning valve.. lines and brackets.. use brackets if needed. Used particularly for the 55 70 era full size or restricted engine room area conversions to disc front Drum Rear and or disc Disc. We can make it with prop valve to the LHS as shown OR horizontal