Ok so my center and rear mufflers are rusted through. I'm thinking about simply going with a magnaflow single tip system. The isssue is the connection to the center muffler from the cats is seriously rusted as well. Not sure after I take it apart that it will even be usable. And not sure i can cut the connection off and have a new one re-welded. I hate to have to replace the whole cat system. Any thoughts.