What you're looking for use to be made by Custom World International. They stopped making them, so a guy named Landon started making them for awhile . One pops up on eBay on a rare occassion. It's called a Landon Grab Bar. They typically go for around $200. Click on my garage and enlarge one of my pics and you'll see it. It's a low profile curved bar that inserts where the backrest mounts. I also have a pair of custom make backrest/bag support arms with the arms removed, smoothed over and re-chromed. If you're interested, I can get you a pic in a few days, since I'm out of town.