Battery Tiedown???
I used the sheetmetal and screws as a "bandaid" to reattach the stock plastic. Yes.. it's all one piece... but the tray has extra material on it.
You could take a piece on Stainless and make a complete new floor with a new lip and attach it to the base with screws. The would lift the battery only to the gauage of the steel and sould work well.


