Answering the OP, yes:
I used the same mounts as are in the popular write-up. You can find those locally at ACE Hardware or order from Amazon. They are pretty cheap.
I marked my mounting location on the plastic trim with the seat slid all the way back. That keeps the flashlight from being mounted to far back and hitting the B post. The plastic trim can be removed with a Torx bit, pretty self explanatory when you look at it. Then, I drilled at my already marked spots and added hardware I had picked up at Lowe's. Just whatever nuts and bolts you decide will fit best. The most important thing is to use the biggest washers that will fit so you don't rip through the plastic when removing the flashlight.
It worked well. The mounts feel pretty solid. I am careful when removing the light, though, being sure not to just rip it off the mounts like I would if they were attached to a metal rail. The weakest link seems to be the trim mount to the seat frame, not the flashlight mount to the trim. It could be a possible problem over time. Go ahead and install it. You will be satisfied.