Wade,
First of all welcome to the PIBB; the guys in Calgary will welcome an additional member for sure that is if you are not already hooked up with the local crowd.
That's a nice spoiler on a true GP4, maybe a one off custom. I think this is Patrick Hals car, he races it in the Classic Le Mans. He uses the DeTomaso e-mail list (an e-mail only forum sharing information) and you could post there, follow the link below to sign up and let us know what you find.
By the way the e-mail forum doesn't accept photos so you may need to reference 'Patrick Hals GP4' specifically
Realbig De Tomaso list
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