That's been the talk at times, that the Mustang's ring tolerances were a little more than the standard 302, but if you look at the car's form during the 1985 enduroes, there is no real reason to label its performance at Adelaide as suspicious: the car blitzed them at Oran Park, and then Sandown, until it busted silly things, and Bathurst was really lost by an oil cooler and an improperly-seated left front wheel - the thing was a jet after the August 1 homologation update... but they all caught up for 1986...