So when I hit bumps or accelerate rapidly it sounds like my drive shaft is hitting something while I'm driving. The car has after market rear control arms and I believe a small suspension drop on it, and poly bushings on the drive train. As I try and look into this some more I am thinking I need new rear suspension, as far as I know it is at least 7 years old but can be older than that.The more weight in the car the worse it does it. Anybody have a solution or might be able to tell me what it is for sure.??