Porsche 911 GT3 Cup teams in the thick of the Rolex 24 GT fight after 5-1/2 hours
Tandy in GT, Lewis in GX also fastest qualifiers
Porsche drivers take the top four GT positions in qualifying.
Chip Ganassi Racing's two car team steals front row as Pruett edges out Dixon. Tandy in a Porsche claimed the GT pole and Lewis took the pole in the new GX class.
GT class stronger than ever, Porsche teams claim 6 of to 10 testing times.
Five Scottish drivers are in the solid U.K. contingent expected for 51st Rolex 24 at Daytona. Ryan Dalziel and Dario Franchitti are past winners of the challenging race.