Took my GTP up to the dragon (US-129/Deal's Gap) a few weeks ago.
New LCAs, lowered with anti-pogo washers, and 245/45-18s. No swaybar upgrades, no strut tower braces. It handled great. Not nearly as well as our 2G eclipse, but I never had 1 moment of doubt with the car. No wheel spin (even in 75% throttle through the gravity cavity)
I attribute most of this to being lowered and slightly wider, brand new tires.