I'm always thinking "since I'm already there" Yes you should consider replacing what is worn. A car that is 17+ years old, yea go ahead a replace the sway bars and end links out. If you do a search you will find all the information you could ever want on suspension upgrades, also don't forget to check the E34 web site, http://www.bmwe34.net/E34main.htm Check both under upgrades and maintenance.