M8B - 1969
Three new and further developed Group 7 works cars were built for the 1969 Can-Am series, using at least one of the original M8A monocoque. They differed form the earlier cars in body design, using wings that stood high above the tail on suspension-mounted struts and had new 7-litre engines built by George Bolthoff, an ex-Traco engineer. There were minor detail differences between the M8Bs and the M8As. The 1969 cars used larger wheels - 15 x 11 front and 15 x 16 rear. They were unbeaten in the 1969 season and took Bruce to his second championship.