M-Sport boss Malcolm Wilson is preparing to debut the brand new Super 2400 car- on his own rally.
The new engine, developed by engineers at the rally preparation base in Cockermouth, will be fitted to a Ford Fiesta s2000 car.
His son Matthew will also be driving the new R5 rally car, at the front of the field, as 'course car'.
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It is now believed that 45-year-old Robert Cantle may have travelled in his car to the Jedburgh area on Sunday morning.
A Cumbrian man has been jailed for 15 years after a police crime unit seized its biggest ever haul of firearms.
The historic event always takes place on the last Friday in July.