I have a 2000 ML320 with 93,000 miles. The MZB dealer reccomends new spark plug wires to the tune of $1500. I was too shocked to even ask about new plugs. I went to Inter Auto here and they gave me STI wires and Bosch Platin FR8DPP33 plugs. What problems can I expect to change the wires and plugs? Is there a torque setting for the plugs? Also, are these the correct plugs? Any help would be appreciated. Thanks.