worked in a place that did electro plating ( chrome / nickel )
and yes it can be done , all depands on the size of your tanks OOOOOEEERRRR :shock:
only thing is they may need to drill holes in any "sealed" tubes to let the chemicals out
one other thing to watch out for is that the threads on the frame will also be coated , bb , brake bosses
only a very thin coating but it will make a difference