I did an autocross event with the GXP and had a chance to compare to the 08 Mustang GT. The US guys would consider the course a little tight. Both on stock tires.

It wasn't much of a comparison. I did 44.8 and the 08 Mustang GT did 47.8. Same class too.

Thought I'd post it for those interested.

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07 GXP - Power rules. Red, manual (naturally), everything but onstar / smokers pkg
Ventureshield protection http://www.solsticeforum.com/forum/s...ad.php?t=28179
KW V3 coilovers :o