1997 American Dream exhaust tip and tail pipe extension

A few years ago I had a problem with my CAT diesel exhaust pipe and tip. Went to a local full service muffler shop and they bent a 5 inch dia. exhaust pipe as required and installed a chrome tip that matched the original.
Suggest you try a good muffler shop, and I would be very surprised if they cannot fabricate and install exactly what you want.
Good Luck