Clark Adams was the engineer at PBS, who designed all the cars, engines, transmissions, etc., including the famous SOHC- and DOHC-cylinder heads for Fiat 850 engines and conversion kits to permit installation of a Fiat 124 engine in a Fiat 850 chassis.
Correct company's owner spelling should be "Paul and Bob Swenson" not "Swensen", whenever although this is often found in the literature