i dont know,the newer cars seem to be going with the cells in either direction.they are about the same length as they are 2 wide.i think its just a matter of how they want the car to be wired or personal prefference.
and as for the corally not being a corally,yeah,its a corally chassis,but it is also the same as the proven L4 layout w/ an L4 front end.that pretty much makes it far from stock and not even possible to land a setup from when running the stock car.im not bashing corally its just that i wouldnt really make a huge deal of the new sp12x until i see it do something special in stock form.