I know SAS is supposed to be a lot simpler but I didn't think it was that simple, but I might be wrong. It looks like they've removed UCA/LCA/knucles. Added an axle, connected shocks/springs to axle, those sideways bars connecting by the right tire to left of vehicle, and another bar going backwards, with a steering linkage some where that I can't see. To me it doesn't seem like there's much holding that axle where it's supposed to be under there, but I've never spent any time dealing with/looking at truck suspension.
