[What's_nitro?]

Hmmm..... Was it custom just for the battery, or for the truck also? It would appear the purpose of that piece is to allow the battery straps to fit under the tray. Mine just had a shallow trench cut across the bottom of the main tray part. By the looks of it, I doubt it is just glued on. If you have a bandsaw (who doesn't, lol) you can slice it down so the tray sits closer to the chassis. Otherwise contact Mike and see what he thinks.