cages can really help stiffen the chassis up on a 240 or anycar, there not just so you can run faster times at the track legally without getting kicked out. jack up a car towards the rear of the car without a cage and then jack one up with a cage and you will see a difference if you understand what i am talking about, the one with the cage will come up in the front unlike the one without the cage. oh it sounds like rambleing but i couldnt really think of another example