Four chassis with backbones from different race car manufacturers. Three different approaches to engines. Vastly different software engineering and styling.
Button happy with "stressful, chaotic, hectic" IMSA GTP debut motorsport.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from motorsport.com Daily Mail and Mail on Sunday newspapers.
Hanson to race Porsche 963 in IMSA enduros for JDC-Miller squad motorsport.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from motorsport.com Daily Mail and Mail on Sunday newspapers.