I wondered some of the same things, especially those side scoops...they may have looked better on the C-Pillars if anywhere? .
I'd expect a lot of the private cars built w/ Motion parts were after an accident, so parts from a few cars could have been used if this was the case...so look for accident damage? .
If it was one of Joel's cars, the workmanship would be similar to other known ones also there should be filled in holes where the GT emblems etc. were placed? .
The tank sticker if there may provide some clue to what dealer it was sent to new which may help. .
Check what suffix and Vin is stamped on the engine...who knows, may even be original to the car? .
Look forward to what you find also the interior pics! .
Any signs of previous existing sidepipes? .
~ Pete
