krewzlo
+1y
Welcome to the site, z'ing is cutting the frame off at the firewall and raising the front section to all the side long rails to lay flat on the ground. The front crossmember hangs lower on some trucks so to get it lower you must raise it up. Its a little more complicated than that but that is the short version. Pie cutting the arms is to change the ball joint angle so it doesnt bind when fully layed out. You only need to do both if you plan on laying frame. You will also need to notch the frame in the rear to allow the axle to come up higher which will require notching the bed floor so the axle doesnt hit the floor. You would have to modify your camper to clear as well but would be bad ass to have a layed out dually with a camper in the bed. Not sure it has been done before.