What tunnel is this??

[Boondock2809]

Hey guys, first time posting. Not sure I’m posting in the correct spot. Sorry in advance if I am.
Just got my son an 02 xc 500 that the previous owner made a long track(144”)
The tunnel was pretty spanked up. I can replace it no problem but I can’t for the life of me figure out what tunnel extension was used. It’s not an aftermarket because it’s one full piece. Any help would be appreciated. I’ve posted a pic of the tunnel section that needs to be replaced.

 

[MrSled]

Can you get a closer pic? I also moved it into General maybe get more eyes on it.

 

[Pro116]

It looks like they just cut off the back of the tunnel off of a edge Rmk.