they used to make a single setup just like these.....for jeeps, matched the wheelbase, HAD TO BE OPEN in the rear, didnt use your transfercase, anyways, it was a single track on each side. it had some weird device that hooked into your e-brakes, applying pressure to one side to make it steer that direction......weirdness......but they are totally cool for snow.....dont know how well they would take to sand becuase its an abrasive. BUMP FOR A GOOD DEAL. like he said, normally 30K theyre meant to take your truck to the extreme snow....lol
