I designed this battery box for 1500mah or less 3s lipos and will lower your center of gravity quite a bit vs the stock position. Currently the only element truck I can test it on is one with the stealth xf transmission so I'm not sure the compatability with the regular stealth x. This print is made with slots so whatever configuration your sliders are in should work, you may need some spacers to make sure the box clears the driveshaft as I have my sliders mounted on top of the chassis plates.