SevenStock, the annual gathering of Mazdafarians at the company’s USA headquarters, is coming. This year the event will feature Mazda’s 24 Hours of Daytona endurance racers, including 1979′s winning RX-7 and this year’s winning RX-8. Drivers from both teams will be there, meeting the fans. In addition, there will be tech seminars, vendors, raffles and tons of old school rotaries. Full details after the jump.