[RC-Monster Mike]

The buggy tray won't fit the truggy directly - the holes are slightly different. The truggy tray is significantly larger, but you can use the extra size to tune front/rear weight bias with a smaller pack. I line my trays with a thin foam(for traction and padding), which allows the battery to stay put during the run. Some use a small amount of velcro on the battery and tray to add positioning security. :)