Best chassis for 4 batteries packs?

yeah i wouldnt put my batteries on the bottom of the chassis either. With the gorillamaxx chassis you put them all on top, two battery packs on each side one on top of the other. So your going to run your 12xl on 24-28 cells! Do you already have the battery packs? cause all those batteries will weigh a ton and you'll need some hard suspension. you could go lipo?