Vacuum wipers are original, kinda cool and relatively easy to keep working as they were designed. The only problem with them is seeing while driving in the rain. If you want the truck stock (and especially if 6 volt) you could go with them, but you need to make sure that you have all the correct parts (like the blades and arms) and that they are working well, (e.g. the vacuum motor itself and including the engine for adequate vacuum to begin with.) To get a swipe or two when needed you will also need to learn to let up on the gas pedal under certain conditions ( like climbing a hill in the rain and getting passed by a semi, YIKES!) If stock is not important to you, electric is the way to go.
