Thanks Sebcst. Richard got the rear fender measurement and he says it’s 14”. Unfortunately it’s still not a definitive answer looking at that fender chart. Seems to be closer to ST than turbo.
I was on the phone with Dave at TRE (super helpful guy) ordering a center fill kit and after looking at some pics I sent him he thinks they’re turbo flares. Another screw job by the previous fabricator I had working on the car. He charged me $3900 (CAD) for the 4 flares plus installation. Pretty much exactly what TRE would charge for proper ST flares (back when the CAD was stronger

The turbo flares are less than half the price of the ST ones at TRE.
Anyway, the flares that are on it are staying- I’m already in too deep with the dollars so I’m going to just decide to really like them
I guess it’s no longer my ST project. It’s now become a Heinz 57. After thinking about it for the last 24hrs my anger is slowly giving way to a sense of freedom to do whatever the hell I want now to the car.
Onward....