hey guys new to the whole building off road trucks i build guns but i ride in the woods alot and love to play in my yoter how can i go to a coil spring with room to flex as it sits it has a 5" lift 35x12.50 tires also what will i have to change the steering or drive shaft or anything else when this is done i know stupid newb but i want it done right so i ask thanks for your help ......stiff as a board that is a 6 1/2" drop and the back tire is actually off the ground turn it by hand or can i get it to flex decent with leaf springs keep in mine its a everyday driver