Originally Posted by Mason

I don't know if this is totally possible but the design sounds good. Make a plate, attaching (screw) rectangular weights to it that fit into the generic battery slots and screw the plate down from the top of the tray into/onto the chassis (or wait, drill a hole through the plate and the battery post can hold it down). the weights wont hang down below the chassis and your battery cg is still lower than a nimhs. any dremel wizard can spend a few minutes hacking this out. any aftermarket supplier could make a couple bucks off this. you guys make me almost want to go into business. You could alter plate density/thickness or weight material/size to get the weight balance you need.

and the guys using the cell emulating packs, flip it over like offroaders.