Not sure if it came with that engine as it does look ugly.

Looks home converted to me. The Brough version based on the Austin angine had the engine longitudinally mounted & was shaft drive.

Looking again at the pics I was suprised to see it is twin carbed & open exhaust. Cooling looks a bit convoluted & I wonder if it has had a pump fitted, as I doubt that the original thermosyphon arrangement would work satisfactorily with what appears to be a much smaller radiator than a standard A7.

I would also have though performance would be a bit tame - depends on the age & state of tune of the motor, of course, but A7s were only 12 or 17hp at around 2800 rpm in standard trim.

Nigel B.