No, sorry Dale. Did not see any SP-250s at this event. The last one I saw was the Dart at Summit Point this year (I think you know that guy).
Oddly, there is a racing/street Dart located somewhere near me in Andover, NJ. I've seen it parked in front of our local Sears and also on a trailer, obviously heading to an event (but it's never been at any of our events, so I guess he runs with VSCCA).
The closest thing we had to a Coventry car was this furiously fast E-type.