This lap the Mustang GT had the Track-Pack, hense the 2-second difference.
The older slower lap was when the 5.0 had just been introduced, no track pack at that time(not that I know of)
Ford Mustang GT 5.0 laptime at Willow Springs - Streets of Willow
Ford Mustang GT 5.0 completed a flying lap of Willow Springs - Streets of Willow in 1 minute and 25.77 seconds.
|Track||Willow Springs - Streets of Willow|
|Vehicle||Ford Mustang GT 5.0 (426 PS)|
|Power / weight||426 ps / 1641 kg|
|Average speed||105 kph (65 mph)|
|Submitted||03.02.2013 by anonymous|
|Reference||current issue of MT|