My 2005 Crossfire base is making a clunk noise when I accelerate moderate to high especially in first and second gear and this auto shop says it would cost $600 to pull the rear subframe, he said quote "To mount on the rear cradle $116 each but it would cost $600 to pull the cradle down." My friend says it's a rip off, I'm not an expert on cars, so I was wondering if anyone knows or has any experience with that?