in the Stebro repair garage on McGill street in Montreal. It had a front engine formula junior design powered by a BMC engine and drive train. The second evolution of the Stebro was the Mark II, a mid-engine design also powered by BMC. The Mark III was a modified Sadler MKV sports racer. The Sadler was modified by adding eight inches to the wheelbase and fitted with a conventional transaxle. The Mark IV was built over the winter in 1962 and 1963. It featured a space frame chassis made of thin wall chrome-moly tubing. The body was clothed in aluminum and original powered by a modified Ford FJ engine mated to a Hewland MKIV five speed gearbox. In the front was a conventional upper and lower A-arm suspension setup, with a reversed lower A-arm and upper top link in the rear. Girling brakes, courtesy of a Lotus 21 F1 car, could be found at all four corners. The large fuel tank meant it could race more than the traditional 20 lap Formula Junior race. Broeker made a deal with Martin engines in England to purchase a supply of the F1 motors they were developing. These new powerplants were based on the recently introduced Ford of England 1500cc five bearing block. Broeker intended to build two cars and enter them in the 1963 United States Grand Prix. His intended drivers were to be John Cannon and Ernie DeVos, who had considerable success in FJ in Canada. Like so many stories, the build did not go as planned and delays meant changes to the schedule. These delays meant there was not time to build two Mark IVs, so Broeker's entry for the US GP was for one Mark IV and one Mark II, both fitted with Martin Ford Power. John Cannon tested the Mark IV and found it to be a capable machine, but then left Canada to race for John Mecom in the United States. Broeker then campaigned the Mark IV as an FJ for the remainder of the 1963 season. The Martin F1 engine turned out to be troublesome and unreliable. As the dates for the US GP approached (at the time, the United States Grand Prix was held in September), Broeker kept asking for his motors, as he had already paid for them and was awaiting delivery. Martin continued to put off Broeker as they aggressively worked to resolve