I was fitting up the exhaust and ran into a minor snag. BTW, that Yosh RS4 is a real fine system - heavy as heck - but does it look pretty. Anyway, I was following the supplied directions when I came across this line:
"install the left and right brackets in the location of the passenger foot pegs"
Passenger what? I don't have passenger foot pegs - nor the brackets to attach said foot pegs (or the exhaust hangars for that matter). More fabrication, grinding and welding.

In the above photo I have the brackets "stuck on" random brackets, but I was able to make some nice "foot peg" brackets out of some spare 0.1875" 2024-T3 aluminum I had.
Having the opportunity to look at the bike, I think I have a solution for the tail section. I've marked the rear fender for trimming and I think I have side panels figured out. As soon as I have the tank/seat/tail bolted down into is final resting place I can build the electronics box under the seat and start wiring this thing up.