For curiosity's sake, in the link below there is a reference to a third crossover muffler on the last Longchamps:
"The exhaust system was changed several times; the original
system was a conventional dual exhaust with upswept tailpipes, but this led
to a problem of exhaust fumes entering the cabin when driving with the
windows down, so the later system’s pipes exited straight out the rear. The
third exhaust featured a third crossover muffler to quiet the cars enough to
meet ever-increasing noise regulations, and was only found on the latest cars."
Do this means the last Longchamps was delivered with a H- or X-pipe original from the fab? If so, do anyone have any pictures of this system/arrangement?