The diameter of the pipe on the 1600 is larger but if you can get a reducer Insert I bet you can make it work. Possibly need to have a new bracket welded on as well. If the price is right I bet a muffler shop can have them on for you with very little cost.
2008 V-Star Silverado 1100. K&N filter, airbox mod passenger floor boards, all light visors, ISO grips, Cobra slash cut mufflers, Saddleman touring seat/ tourpack. Lots of little extras.