GT Nationals 19-20 Rounds 5 & 6 - Tech Sheets and Videos 1/12th Circuit GT Previous Article GT12 Tarmac Grand Prix Next Article GT Nationals 19-20 Rounds 5 & 6 Chesterfield Race Report Tech sheets and videos from the Chesterfield GT National. Videos are avaialble in the Youtube playlist. GT Nationals Round 5&6 Videos. GT12 National Round 5 A Final Tech Sheet. GT12 National Round 6 A Final Tech Sheet. Previous Article GT12 Tarmac Grand Prix Next Article GT Nationals 19-20 Rounds 5 & 6 Chesterfield Race Report