dude, i am 110% impressed with the caril/defiant setup. works extremely well in the heat but a little rough in the cold(colorado cold). i have the king 2.5s and have no complaints. if price is a concern start small and work up. thats the best part about carli/defiant. i drive my truck like i am running from the cops, on and off road and i love the fact knowing that its built to take it.