Thanks again for the replies.
Have found a piccie of a ex le-mans racer spitfire ( with a gt6 back end - supposedly good enough for racing aero )
Anyways , wanted to show you guys something interesting.
Look mid-way down the bonnet , its got a little deflector ?
Would you of thought this would be for " smoothing " the angle of the air hitting the windshield or what ?
Heres the piccie
These cars were hitting 134 mph from 109bhp 1.2 litre engines !
Thats probably around 70bhp at the wheels... not bad for 134mph