it was a Production car in 1997 but officialy only 8 where ever made of which only one of those "officialy" made it for use on the road (tho unofficialy there are 2 Road going cars) the rest where used for Racing
the Road Cars used a twin Turbo V8
that should be a Huge enough Hint to find something out

if no Guesses i'll Give another Pic from a Different Angle Later on today