unbolt the handle from the backside of the gate and undo the clips holding the rods onto the handle, place the template on the back side of the gate, mark and cut the area needed. set the relocator plate in place and drill the needed holes, and screw it down. install handle by connecting the rods again and bolt down handle.
flip the gate and make a filler piece(if not provided) and weld and do your mud work. prime, block, reprime if needed, block, prep, seal, paint.
i shave gates and paint em for 300