Anyone ever polish the accessory bracket?

I know what you mean!

Powder coating is certainly an option. There's a lot of nooks and crannies to try to get to on that bracket. Polishing would be tough. I wouldn't even consider it if my engine weren't visible from the sides when the hood sides are off. I love my LC2, but from an asthetic standpoint, it's UGLY!
All you see ....

is the top of that bracket. Polishing that would be pretty easy, keeping it clean would be the hard part!
all of mine are chromed except the big one, but its painted a nice hi/heat gray
I used Mother's mag wheel polish on the aluminum AC lines and door sills, worked real well. Acessory bracket will polish up just fine, just a lot of work. You will go through a few buffing wheels.