I'm in Columbia, SC. You're right, they don't call it the Circuit VTR on the website. That's what's on the homologation tag and I went by that. It's the same seat as this: http://www.sparcousa.com/pseats_comp.asp?id=635 It does seem that Sparco has made some minor cosmetic changes since this seat was made (no Sparco logo on the seat bottom pad, just says Sparco rather than Sparco Circuit).
Matt, What is the VTR? I don't see that on the Sparco website... same as the circuit? Where are you located