RE: New Truck
stay away from the ss and the xl as far as the engine is concerned, also the ss has weak drive cups. the rtr savage x is by far the way to go. the xl has even more upgrades but the engine has some issues. the f 4.6 in the rtr will spank both the xl5.9 and the k4.6 in the ss. but all this being said the xl already comes with the bulletproof (machined not sintered) differentials, hd axles, 3 spd. My biggest gripe with the xl is...well...the look of it. i find the x chassis has a nice rounded out look to it. nice and beefy, where as the xl looks streched. doesnt matter which body you put on it they all look retarded. (except for someones flux xl with bigjoes and a black f650 body on it, on this site, its sweet looking) most of this is just my opinion but as far as the engines go if you want the best mill get the rtr savage x.