Rick, if you find a proper source, let me know. I have done exhaustive (pun intended) searching and although there is stuff available for the CB/CL, like here http://jemcoexhaust.com/downloads/Je...ct_Catalog.pdf
The late SL's have the twin downtube frame and it is uncertain if many of these aftermarket ones will fit.
I almost bought a pair of these http://cgi.ebay.com/ebaymotors/Honda...ht_1748wt_1167
but was uncertain if the 360 flange was the same as the 350 motor...and whether they would clear the frame due to their design.
This is why I suggested we find someone local to make pipes for us. This is also why I have been hoarding SL exhaust pipes, because they are rarer then hens teeth. I still want to find someone willing to make a 2 into 1 coming off the right side..this fixes the issue with drive chain contact with the pipe, and will be good when I dirt track the sucker
I hope you do find something that works..heck, for $119 bucks, those 360 TT pipes might be worth trying...I could always buy them from you for my CL350...if they don't fit and would fit the CL head.