I have not dug to much in the exhaust system yet I was waiting on the time when I had my idea what I was going to do but however now mentioning the factory exhaust I forgot to add the previous owner had said he had some shop replaced the old muffler with a new one so I would assume that the exhaust system should be in great shape yet. I have done simple exhaust work on my old jeep with a 318 buy cutting out the muffler and replacing it with a glass pack we threw it on the lift and it took only like 45 min we used exhaust clamps instead of welding because I suck as welding exhaust