Holden's Jamie Whincup has posted the fastest time in practice for the Supercars event at Townsville.
The championship leader - a seven-time race winner on the Reid Park street circuit - clocked a best lap of one minute and 12.5530 seconds in Friday's second and final session.
Whincup finished ahead of Ford's Chaz Mostert (1:12.5995) with Holden's Will Davison coming in third fastest with a 1:12.7206.
Whincup's Red Bull Racing teammate Shane Van Gisbergen, who was all over the place in the day's earlier session, was fourth fastest.
Defending series champion Mark Winterbottom - who won both races at Townsville last year - was seventh quickest.
Holden veteran Craig Lowndes looks to have plenty of work to do ahead of this weekend's 200km races after finishing well off the pace.
