Wednesday, September 20, 2017Tags: Trenton EstepMark KvammeJDX Racing No. 3JDX Racing No. 43HEADLINES:First Visit by Porsche GT3 Cup Series to Sonoma Raceway Makes for Great RacingChampionship Has Been Decided but Drivers Still Fighting for Final Season PointsWEEKEND SCOOP:Estep Aiming for Second Place in Season ChampionshipMark Kvamme Continues Podium StreakTrenton Estep...