MECOA still have the 45CXL header, same bolt pattern 26.11mm, available in 0° and 15°. You should be able to modify to what you need from there.
Also, I would email Ken Enya and ask him directly if he has any left over. He sometimes has things not on his Web site. But, the CXL only came with a nub header to push the muffler onto, so again, some aftermarket work would need to be done for a pipe.
Good luck
Craig