The first one I placed under the front floor almost inline with the front body mounts. The rear was a little more dicey. I rested it under the back portion of the inner fender well. The edge of the metal did curl up some but there was not really a better place and the metal was easily straightened back out. I should mention that used ratchet straps to secure the body to the cart so that it didn't shift while moving it around.
Marc
