Paul Wright and his partner, "S" used that logo on a lot of their stuff. Paul was one of the first guys to modify pistons for using BBC rods for a 409. also an early inovator using BBC cranks to stroke them. He run stock cars around Akron , all with W motors for ages. He tried reverse rotation motors because he thought they would come out of the turns better. Back in the 50's he made tooling and cast an alloy SBC for Chevrolet. He was under the radar so they didn't have to worry about spies.