Electrolysis is not a joke, it's another good way to do it. It just requires soda ash and a battery charger for a good rust remover solution. I've actually been looking into doing electrolysis on a full unibody (Opel GT) to strip it of paint and rust, to get a nice and clean steel body for a restoration. Haven't picked up an Opel GT yet, but that will be my first project car. I'm thinking the best way to do this, is to just do it myself otherwise it would cost like $8,000 in total. And yes, there is a way to dip an entire vehicle yourself. It be a tad crazy, but you can do it yourself and for less if you know what you are doing.