Pontiacs were built in Canada by Canadians in GM Canada with Canadian raw materials beginning in 1926, with factories in Oshawa, Ontario and Regina, Saskatchewan. The models they produced were largely the same as their US built counterparts. Canadian cars had Canadian oak in the bodies, not peach wood like the US cars. The first significantly different model was the "224", introduced in 1937 with a Canadian-built 224 in3 (3.7 L) version of the then-new . After 1940 the 239 in3 (3.9 L) Pontiac Flathead Six was used, but otherwise the cars shared chassis and body parts with the Chevrolets as a measure to reduce the cost of production for the relatively small Canadian market.