I have a 2001 cobra and the rear feels like its moving all over when I accelerate. Sometimes it feels like it just going down the highway switching lanes. It still has the irs. Has subframe connectors H&R springs and Stock shocks and struts. I don't get hardly any wheel hop. Would this be caused from the stock rubber bushings? I replaced the back tires. The old ones were from 2010. The insides were bald but the outside had some tread. Does the irs require an alignment? Could that cause this? Theres also a tapping or clicking noise when I make sharp right turns. It sounds like it's coming from the back. If anyone has any ideas or similar experiences I'd appreciate the advice.