Thanks for all of the information.
I did the bolt conversion on my '09 SERG after I lost my left bag and didn't know it was gone. I found it, but it was pretty bad shape with scratches etc.
Instead of using 5/16" bolts and the sheet metal slid on nuts, I used what I had in my parts drawers, 3/8". They kind of thread through grommets. I have a big fender washer on the inside and just slightly crush the grommet and they stay very tight.
At $1725 to replace just the left side, but that was factory painted to match. Maybe raw with speakers would be a nice upgrade and I'd just get them painted to match. I could keep the originals to sell with the bike if I ever want to sell or trade in.
Thanks again. I basically sounds like the newer bags will work with very minor tweaks, just what I wanted to know.