Adams sells the tool kit. You will also need a air compressor and large snap ring pliers. Adams part number TD329G01

You can try to blow part of the oil back into the tank but you're still going to have a mess in the pit. You will need to pull the bleeders from the top of the jacks as well. You will need the puck and stand kit, that's what I have heard it called, straps and a come-a-long under the car to pick the pistons up. This is where it turns into a mess. A small pump with garden hose fittings and a couple of 5 gallons buckets to catch the oil. Slightly pick the smallest diameter section of piston out of the piece on the floor. Slowly let it drain into the pan and pump that into the buckets. I would pump one bucket, dump it while filling the other depending on how much you get blown back into the tank. A hammer and piece of wood come in handy as well.