Have a look at and good laugh with
https://www.youtube.com/watch?v=xSvIkIcPLjM
Apart from a ... refreshing ;) look at supercharging a car, pay special attention at 9 minutes and 30 seconds...
Oh, Jim Hall of Chapparal Cars was the pioneer of such wings ánd the axle mounting. This is also where the confused ´chassis mount´-lore originates from.
It is worthwhile reading up on Jim Hall btw. Arguably the most innovative and successful engineer in car racing.