I have one. Have been comparing it to street modlels and the first thing I notice is that I have 6 leaves in the rear suspension and 3 in the front where as all the stock K5s I see have one less of each. I also have a PTO winch and no smog stuff on it. And it's smog legal in CA. (go figure) My question is this. Are there any hidden mods that I have yet to see that you know about? Like reinforcement of body panels and the like? Also I think it has a 3/4 ton rear end. It's a 12 bolt but the guy at the local driveline place said it has 3/4 ton hubs. But it's 6 lug wheels. Anyone know about this?