Here are some pics of the almost complete left side bracket.

Im proud to say this was all done by hand. I used our makeshift brake (mounted in out hydraulic press at work) to make the bends, then cut out the basic shape with the cutoff wheel. After that the fine tuning and edging was done with files and sandpaper. The results speak for themselves :)

Disregard the nuts holding the bolts on, its just for mock up. Those bolts will be threaded into the seat.