Don't know if it's the same but I recently changed the back section of a late model Duratec +4 for a TMer, I was convinced it was the main silencer from the sound but as soon as we had a good look (and a bang with the hand confirmed) it was the inner part of the rear 'resonator'. Just to confirm the diagnosis as much as anything when I had fitted the new rear section I drilled through the resonator from above and using a Chinese Finger (a flexible long nut/bolt holder) I inserted bolts from the inside and using a nut 'crushed' the baffle against the outer shell and the rattle stopped. Drilling from above means if refitted to the car it can't be seen. Afterwards I finished this bodge off by flashing some arc weld on the nuts to save them vibrating loose. It's not a clever or pretty fix but would get you home kind of fix and fun to play on a wet day ;-).
Last edited by Spanner Juggler; 27/07/14 07:41 PM.