the third and final day of testing featured a qualifying session to determine the locations of the team's pit stalls and garages for the race three weeks later. nasr's no. 31 action express cadillac set the fastest overall testing lap time of all drivers with a 1-minute and 35.806 seconds effort. the second-fastest car was the no. 90 spirit cadillac of vautier and albuquerque putting the no. 5 mustang sampling cadillac in third position. wayne taylor racing placed fourth from a lap by van der zande and dane cameron completed the top five overall runners in the no. 6 penske acura arx-05. joey hand set the fastest overall gtlm time in the no. 66 chip ganassi ford with a 1-minute and 43.610 seconds lap. oliver gavin's no. 4 chevrolet corvette c7.r was second, followed by the sister no. 67 ford gt driven by briscoe. ineichen's lap from the first day of testing was never bettered and the no. 11 grasser lamborghini remained the fastest gtd car. cairoli's first session lap in the manthey porsche was fast enough to keep it second in class.