Barry, According to the photos it shows that the ext. come up higher on the Ansa conversion. To lower the mufller by dropping the pipes where they connect on the rear of the muffler may drop it too far and it would show or also the muffler may protrude to where the cover won't go on. Also to cut the pipes behind the muffler where they attach to the muffler could be very tricky. In any event it will be a touch and go job. You may have to take it to a muffler shop and have them make new pipes that attach to the muffler up inside the cavity that houses the muffler. These are only suggestions not being there and seeing the situation first hand. One thing you have going for you is that the muffler cavity should be large enough to acommodate a pipe redesign.