This is a how to article on removing and installing an oxygen sensor in a compact Volkswagen automobile produced from 1993-1996 with a 4-cylinder engine.
Information about automobile replicas. Also a comprehensive list of auto replica sites that sell full chassis replicas. Such a list isn't found anywhere else on the internet.
Here I try to explain the more complicated aspects of how ground effect works in a simple way. Ground effect has never been fully applied in a production car.