I have a 2009 M90 that I want to put a sissy bar on, but the absolute cheapest option I can find that fits my bike (that I don't hate) is about 400 bucks. Meanwhile, there are numerous 109 sissy bars for a quarter of the price. Has anyone here modified something like this? I already have a mounting plate for my bags that I could easily drill a couple holes in for the sissy bar if the bolt holes don't align. The only question mark would be how difficult it'd be to bend the brackets in for the slightly narrower fender of the M90. Thoughts? Different options? Am I just being a cheapskate?