My nearest mot test centre wont look at a Harley that hasn't got a road legal exhaust (started like that in June after the inspectors got him)
my 92 softail came to me with the baffles drilled out and i spent a fair bit of time searching for suitable mufflers to get through the test i even tried ordering from hd but my order was returned would have been really easy to find something noisy
i eventually got a set from ebay just in time for the inspection and passed
moral of the story keep the legal ones legal you may need them one day
Brian