The base : 1966 Ford GT40
The projects : Groupe 5 Silhouette Version & Group C Version !
Here is two little sketches of two different projects based on the mythic Ford GT40.
Ford GT 40 " Group 5 "
I've imagine a silhouette widebody, very aggresive, like Group 5's racers of the late 70s. ( or also DRM, IMSA GT, Super Silhouette, etc.)
Ford GT 40 " Group C "
This other and very special GT40 is a hypothetical Group C version of the famous racing car ! In fact, it's a mix between a Porsche 956 and a Ford GT40.
(same size as the Porsche ( with a similar cockpit, lateral,etc) with a lot of new elements ( inspired by the GT40) : front face, lateral scoop, side window, rear fenders, wheels, etc.