While it is impossible to define "legal" for any vintage group, I really enjoy watching the Texas Mustangs hustle around Hallet at Corinthian races. They are definitely closer to vintage than SVRA and a handful to drive in near original form. James's car looked great on and off the track and I thought it pretty cool just the way it was. In large part because it was the way it was.
SVRA is pretending to have rules, but only pretending. Vintage Racing just isn't about rules. It's about the cars, the show, and the experience. HSR East is totally rule less. The Mitty has evolved into a very much run what you brung type event. Even in SVRA many if not most of the front running E-types would not even be contemporary SCCA GT2 legal, or full prep Production legal, let alone anything like 1972 PCS legal. Sort of cracked me up at the COTA SVRA event last fall to see a couple of E-types with custom twin plug never in production by Jaguar heads, 6 speed modern race gearboxes, full prep suspension, monster 4 and 6 piston calipers squeezing huge vented rotors, and custom alloy bodywork recently built, running at an event where an 80s prod car might be turned away.
I am not judging as the car I had at Indy was not period correct and so bumped from Group 3 to 8. I like how relaxed and how well run the SVRA events are. It is big fun. If you are the type that gets hung up on "fair" or likes rules it's probably not for you though. Head scratcher of the weekend was Halkias showing up on R6s and being forced to buy different tires, all while racing in the same group as Huffaker, who had cantilevered race slicks on all weekend. :ask: