Lol! Just a word to the wise- When cutting off the mufflers, cut the pipe as close as you can to the front of the muffler, that is, the INLET of the muffler. Once you crawl under there, you will see what I mean. If you cut too far back , you won't have enough pipe to get a straight piece on there securely. Mine had just enough left to hold tightly. That and I tightened the clamps w/ my impact wrench. Remember, measure twice, cut once. I went w/ a 2 1/2 inch tip that has the slits cut in it at the clamp end to allow it to fit on the stock 2" pipe extension I used. If you go to autozone, just look for the 18" section of straight pipe that has a flare on one end and is 2" OD on the other, and then just get yourself some tips. I went w/ round since the car really has no edges, so I think square would look goofy. maybe some nice round slash cut tips would look good too, but I couldn't find any. Good luck.
These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.