These stretched Packards were built by Henney, referred to as the Executive Sedan: Classic Car Specifications, Engine, Wheelbase, production numbers, VIN numbers for Antique Cars, Classic Cars, Vintage Cars and Muscle Cars.It's a Formal sedan, no Executive's in 53. Also no such thing as anti skid. Probably the motor mounted on the firewall that operates the pump for the hydraulic system.
Great car though.