A group like GRM doesn't have the engineering skills that T8 do. The best teams have been involved and will deliver a great product.
Have items such as the rear wing on the Mustang been signed off yet? If not, no surprise the teams can't hit the track.
But its just a shakedown. Normally they can only do 60km of running. What does it say if PremiAir are also on track with T8?
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