NOS Disc brake cylinder

Bore is the same as 68-69 booster shown for comparison. Tag on booster has pwr on it. Mounting holes are the same
68-71 a bodies use the same booster for power or manual. Piston hole for plunger is same depth as black booster shown for comparison. Bolt pattern is the same also. Maybe someone who has access to part number reference can chime in.

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