1983 300SD started to rattle when going over bumps. Changed the sway bar links (easiest job to do and under $20.00) and rattle stopped. When exploring under the car I shook the muffler and heard the rattle coming from one of the "mufflers". Probably a baffle broke loose. Anyone else have this sound in muffler? Links cured the noise but the muffler has a broken part in it. Left front muffler has it.