1998-1999 Toyota GT-One

Image copyright Martin Spetz, Tony Mathews, and Race Tech Magazine
Text copyright Michael J. Fuller

Tony Mathews, 1998 (#19) issue of  Race Tech MagazineWhile not the first contemporary LMP/LMGTP to have a front diffuser, the GT-One's was certainly the most aggressive at the time in its design and packaging.
Toyota GT-OneMuch effort went in to providing a clear path for the front diffuser airflow to exit the car as efficiently, and unobstructed, as possible.  
ęCopyright 2012, Michael J. Fuller