Welcome to the forum, and congrats on the SRT. I can help you with one of your issues. The car following the gaps in the road is due to your steering stabilizer. You can get one from Chrysler for $649, or you can get one from Steering Dampner Mercedes Benz SLK Chrysler Crossfire - JoeTLC for $19. LOL Gotta love the Chrysler markup. Do a search for steering stabilizer on this forum for instructions. It is an easy 10 minute job to replace.