Rob, Roy sent me a picture of such a pipe, but he thinks it may be home made.
It can go up/forward but it will be a bit of a mission unless it goes through the 'V' joint of the pipes.
Clive, There is just enough room to get the pipes through next to the engine plates.
Poul, There is nowhere near that much room on my bike
![Very Happy :rofl:](./images/smilies/rofl.gif)