It's the ING that has you screwed up. It's "Diamond Plate" a heavy gauge sheet metal that has a diamond like pattern stamped into it, giving it more bulk and strength. In steel it's ugly, but in aluminum it polishes up" real purty !"
go to www.psypokes.com and go to the item list:) it helped me alot......
No Limit Engineering in San Bernardino, California Had made some out of aluminum, for classic trucks. Maybe they will do what you need. nolimit.net