Losing less revs is exactly what Im after and slower to decelerate
means to me it will pull better with its stored energy problem is
which flywheel fits an A10? only early a12?
With a twin V belt pulley off the crank to the alternator, Waterpump
and supercharger it could mayb do with a bit more weight in engine rear.

I drove an old 58 citroen 2cv (640kg) and the thing was so nice to drive with
only 600cc, massive flywheel and 2 cylinders of less than 32hp :)