Looking good! Any more pics or info? Is everyone sure this was made by Mugen, not just someone who got the wheels, seats, and sideskirts, plus a custom widebody and front-end? I've just never seen this one before!
Regarding production, all I can say is that Mugen does have a history of producing prototyes that never get any farther than their showroom. Did their F-40 lookalike kit with the fixed lights ever get produced? I don't think it did...
Jeff