New 07 E320 Owner - HELLO!

1. I searched a little bit but couldn't find a definitive answer. How feasible is it to get the dual exhaust tip installed without altering the bumper, preferably using the bolt-on ones? I've seen them on eBay for about $150 or so? I want to emulate the look of the E320 Sport with dual exhaust.
2. It's under the factory warranty for another 14 months or 29,000 miles so that's good. I think I'll probably look into the extended warranty by MBUSA or a third party. Any suggestions?


