Even without the TracKey's race
mapping, the Boss engine is significantly modified over a standard Mustang GT's 5 - litre V8, with a new intake and new camshafts helping lift power from 412bhp to 444bhp, although curiously the torque drops by 10 lb ft to 380 lb ft.. It's the
only car in the test with a manual gearbox and it's a really good one, with the pool ball - topped gearlever sitting
perfectly in the palm of your hand and movement around the gate feeling tight and precise.