retropimp

Hi guys, so when I bought my mb I noticed it had a blow in the exhaust. And while spraying my suspension bolts noticed it's not actually attached to the backbox. Now the backbox it's self looks pretty new. As the previous owner said its nearly new .I can only assume he attempted to fit it and it went totally wrong. My question is. Are there any fairly cheap performance back boxes available that are direct bolt on. Requiring not alot of work ie welding etc. I'm not after the usual ones you find on ebay. And i'm not looking for anything too loud and cumbersome.Just a nice sound when flooring it, and quiet when driving sensibly Ideally looking for a 3" tip to fit into the existing cutout on the rear bumper. I've had a look around and I cant see if anything is a direct bolt on. your help will be much appreciated Ash