Group A Sierra Cosworth - Talking Group A turbo terrors with Carey Mcmahon

We bumped into Carey McMahon, who competes in Group A Historics, at Croydon Racing Developments. He was owned the R31 and R32 Nismo cars and now races the Benson & Hedges Sierra Cosworth. We talked to him bout comparing the cars, the racing and what's in store for the Sierra.