Also, for as slow as these darn things are, the mileage isn’t that great either. They got a little bit better than the V8 powered full-size vans of the period (though about the same as the 6-cylinder versions), but the newer full sizes get better and newer mini-vans blow them away.
Unless nostalgia is the main attraction, you’re better off getting a newer full-size van based camper. Or just getting a cheap minivan and tossing a mattress in the back.(Or if you want to be more ambitious, google “DIY camper van”)