I left mine in. Helps with axle wrap. My buddy took it out and he has pretty good axle wrap. Not horrible but definately more noticable without it...crashed said:Running 63" Chevys on the rear of my 87 4Runner. The Chevys were a 3 leaf pack w/ an overload. I took the overload out and they don't seem to de-arch too badly. Has anyone had a problem w/ this set up? Bent? Broken?