If you haven't already, I'd suggest searching the forums here.
For universal bags I'd suggest looking at Tsukayu Strong bags and Viking bags for starters. You could go with the bike specific strong bags or the universal; a Tsukayu rep recommended the universal to me. I also think that they might have some cutouts for the pulley, but I'm not 100% on that.
Witchdoctors has made brackets which allow X bike bags to be mounted on a KP. Check the picture thread in the KP forum, cause I seem to recall seeing some KP's with X bike bags mounted.
I have a pair of the Viking hardbags which are leather. The free mounts are pretty cheap, but the bags are really nice; I also wasn't able to get their "easy" brackets to work the way I wanted. The main trouble I ran into is that the back of the bags are not flat, but slightly curved which makes them difficult to fit to a flat plate. Because of this I haven't mounted them yet.
2009 Kingpin Low:
- Mustang seat w/ driver's backrest
- Swept exhaust
- Stage 1 flash and high-flow filter
- Victory saddlebags
- Guardian bell
- Lindby highway bars
- ATS @ +4 deg
2005 Honda Shadow Spirit - Sold