Does any one knows are there any deferences in suspension on Sport vs. SR5 and Limited models?
I know that Sport comes with X-Reas, but besides that does
No, only difference are the shocks. X-REAS is standard on the Sport Edition, optional on the Limited. So a Limited without X-REAS is just like a SR5 and a Limited with X-REAS is just like a Sport Edition.
V8 Limiteds add the option of having X-REAS with the rear air suspension which allows the 4Runner to lift and lower its butt. You cannot get the rear air suspension without X-REAS though.