Yes it's supercharged, although the front cowl is fake as the charger is mounted on the side of the engine....it gives an easy 80hp which is about right on a 1930's chassis with drum brakes.

I took the MG and the M3W out today and it was interesting to compare the 2...the ride quality, steering precision and overall comfort and dynamics of the M3W is in a different league, but both have bags of character and charisma, albeit delivered in very different ways.