2003 Bentley Speed 8

Images copyright and courtesy Bob Chapman @ Autosport Image
Text and images copyright Michael J. Fuller

The Bentley's front end air management takes a slightly different approach.  The inlet for the radiators is in the relatively standard mid-waist position.  But in order for the air to get there, it first blows past the suspension which is simply covered by a small cover forming a faux duct.  The aim is to reduce the lift generated by the air as it travels over the front bodywork on its way to the cooler inlet.  By routing the air through this duct, it reduces lift generated (the air must slow down as it travels into this inlet) and it actually enhances front diffuser action as the diffuser's trailing edge resides below this high pressure area. 
Note the trailing edge of the front diffuser residing in the high pressure area of the faux duct.  The high pressure area acts as a gurney enhancing the draw of the front diffuser.  The NACA ducts feed the brakes.
The front torsion bar suspension is evident in this image.  Note the diffuser strake trailing edges (4) mounted to the brake cooling duct structure.  Additionally, the structure housing the brake duct inlet also forms the trailing edge of the duiffuser.  The stub wing continues both the upper and lower sections until they are 25 mm apart at the trailing edge, thus staying legal (and not forming an illegal wing section, ref. Art 3.6.1).
The front diffuser/crash box structure mounts directly to the tub via only a hand full of quick release fasteners.  Bentley showed how quickly they could change the entire unit during the 2003 12 Hours of Sebring event, replacing a damaged splitter in a matter of minutes.
Le Mans scrutineering 2003.  Note the apparent removal of a number of strakes as compared to the picture above looking into the trailing edge of the diffuser assembly at Sebring.  Additional evidence comes from the empty recesses for the missing strakes.  There are spaces for 4 strakes per side with only 1 complete strake (leading edge and trailing edge, note the split line in the strake to allow for removal of the undertray unit) being used here.

©Copyright 2003, Michael J. Fuller