respectfully, and speaking from personal failures, i don't think brackets made from sheet metal of any gauge will be rigid enough to hold lights steady enough for good focus on road or to let you aim em accurately. you can get 1/8 or 3/16 plate or bar stock to do the job at yr local Ace hdwe for <$5, hacksaw it to size/shape and clamp it at correct angle, and any local body shop will MIG weld it up for <$10. if you include a "gusset" (small triangular section that fits in the "V" of the 90 degree angle and is welded to both pieces), it will be way rigid and maybe better than factory item. try to look at factory item and see what Sub made it out of.

for adjustment of any aux fogs, i just use an old carboard box or Marie Callender pie pan to block off one and then aim other for best vision low and to shoulders of road. swap box and repeat. low tech but it seems to work. just remember the type of light pattern and appln fogs are designed for....a low flat beam that lights off to sides and is low enough to get under fog curtain.

good luck.