Hi Paul,
‘All’ the Pagodas had dual pipes all the way to the tail pipes.
However, I have read that some 250SLs had a single pipe, after the down pipes. I don’t really believe that, but my 4th Pagoda, in 40 years, a 250SL, purchased about 2 years ago, came with a single pipe from the down pipes all the way to the tail end.
I hope that someone more knowledgeable could give us the answer.
Regards
Chris