I just got done recently replacing the floor pan in my Duster.TAKE your TIME and think things through for each step.Use weld thru primer between the floorpan and the frame rails,etc.Plug weld where the original spot welds were,approxiamatly the same distance apart. Use plenty of vise-grip type clamps where possible.Support the car under the rockers near the front to take the weight off the frame/torsion bar area......P.M me for my phone number,I can walk you through it if you have questions........YOU CAN DO IT!!!!!!!!