Booster Conversion Kits. Factory-Correct Power Braking — 1973–87 Chevy Truck OE-Style Booster Conversion. 1973-87 chevy / gmc truck 11" dual power booster kit. If your truck runsfront disc and rear drum brakes and you want improved stopping powerwithout altering the factory look, thisOE-Style Power Booster Conversion Kit is engineered specifically for the job.
