Damnit!
rtj - you just gave me another assignment!
I recall there is a relationship to the height of a gurney flap and the chord length.
Hmmm - would you wanna bet the same (or close) could hold true for body length and (NASCAR-style) spoiler height?
Added to my many items I find interesting.
Cheers mate!
oops - I've cross-posted - hope that's not bad either!!!