New drivers seat mounted; will fit this tomorrow afternoon!
All this aero talk is funny, not sure why it's all so serious snoball? The airflow on the mk1 that goes under the car comes up and out the engine bay. The other cars you mention have flat bottoms, which the mk1 does not.
As for an f1 style spoiler, don't be ridiculous. It's a road car that may be used on track occasionally.