From Wikipedia
The Cozy Mark IV is a 4-seat, single engine, homebuilt light aircraft designed by Nat Puffer, with parts and plans supplied by Aircraft Spruce & Specialty Co. The aircraft is built from plans using basic raw materials. It is not a kit aircraft, though many small parts are available prefabricated.
I quit flying July 1996, when TWA800 was shot down, and threw my pilot’s log & certificate in the trash. I wouldn’t get in that thing.