Paxton option in 66? Yeah...right.....

The Kaiser Manhatten also had a pressure box.

Yeah, in 1954. It had a supercharged 226-inch flathead six. The supercharger was a McCulloch - the McCulloch company formed a separate Paxton division in 1957 to build its superchargers (which were called Paxton superchargers from then on). The supercharger upped the horsepower from 118 to 140. Not too shabby for the day, considering the 49-50 Oldsmobile 303 inch "Rocket" V8 only had 135 hp (although by 1954 Olds had 185 hp).

kaiser manhattan motor.jpg