I could be wrong but from what I have seen the three bag models are made more for a fairing and too big for just a w/s. I would do as suggested above and just get a universal fit single bag.
2006 V-Star 1100 Classic
Silverado windshield and passing lamps
OE Highway bar with custom mounting brackets
Kuryakyn Dually ISO Highways pegs
Barons Nasty Boy Slip-ons
Kuryakyn led headlight halo