The 1967 2G was a development of the 2E. It featured wider tires, and a 427 aluminum Chevrolet engine. While on par with his competitors in terms of power, the lightweight 2C chassis was stretched to the limit and it was only Hall's driving skill that kept the car competitive. For the 1968 Can-Am series, still larger tires were added to increase grip.
Jim Hall's racing career was effectively ended in a severe crash at the Stardust Grand Prix Can-Am race when he rear ended the slow moving McLaren of Lothar Motschenbacher, although he did drive in the 1970 Trans-Am Series while fielding a team of Camaro Trans-Am cars.