The small crossmember that used to secure the spare tire needs to be removed. Chris cleaned off the bottom of the rivet with the plasma cutter. Next, an air chisel was used to pry the crossmember off of the frame. Then the rest of the frame was checked to make sure there was nothing that would keep the tank rails from sitting flush against the frame. There were a couple of ancient exhaust mounts in the way, so we cut them off and cleaned off the frame before proceeding.