Hi, I have a 2004 3.0 (12/2003) with 129,000 miles on it. I'm collecting parts and tools to totally refresh the rear suspension and all things rubber in the rear end. Should I consider replacing the springs as well? Nothing appears to be wrong with them but recently I was reading about an M5 suspension rebuild and they recommended replacing the springs which got me thinking I should do the same.

Also, I have a clunk coming from the rear end when taking off from a stop. If I'm smooth with the accelerator it doesn't happen or if I have a load it doesn't happen. The clunk is somewhat loud and can be felt at the same time. I'm thinking rear diff, rear bushing?

Thanks,
Alex