Allstar Performance Power Brake Booster — 8 in OD Dual Diaphragm, Universal | ALL41006 1970-dodge-coronet-esi9394579 "text":"It uses a 1/2-20 thread

"text":"It uses a 1/2-20 thread

with steel studs sticking out

Size: 72 x 8 in

even with the thermostat installed

Allstar Performance Power Brake Booster — 8 in OD Dual Diaphragm, Universal | ALL41006 1970-dodge-coronet-esi9394579 "text":"It uses a 1/2-20 threadThis Allstar Performance power brake booster features an 8 inch outer diameter and a dual diaphragm design. It is constructed of steel with a cadmium plated finish for corrosion resistance, for universal applications. Sold each. Spec Sheet: Allstar Spec Sheet Compatibility This is a universal application power brake booster and is not vehicle specific. Verify mounting dimensions and master cylinder compatibility with your brake pedal assembly before