Don't know about limited availability. I found the CAD files on line for all three sets of brackets. Front set, and both the 10 degree and 5 degree rears. I took the files to a local CAD machine shop, and said he could do them no problem, but I thought he was a little high on the price. I then took the files, opened them with a viewer I got off the web, then scaled them properly to print out 1:1 templates. I am going to cut them out with my plasma cutter, and do them myself. I know now I can make these no problem, but I figured for 25 bucks each, I'd just buy yours and save the work. Oh well, heres hoping for alot of other interested people for you.
Thanks,
Kevin