The 1986 Oldsmobile Italdesign Incas concept featured a quad turbo inline-4 engine, and featured a displacement ratio of 2260 cc and 137.9 cubic inches. 175.2 inches in length, the Incas are 72.8 inches in width and 49.2 inches high. Featuring 4wd driven wheels, the ’86 Incas had a 113.2 inch wheelbase. The Italdesign Incas was capable of 230.0 bhp at 500 rpm with 101.77 bhp per liter.