4 by 4. Title was salvaged and converted to RV using a 2018 Toyota Tundra. Bought this very recently. Need to sell it because I'm moving. Basically brand new. One of a kind. Super custom. Head turner. Nothing else like it anywhere. Casey toilet full shower and sink. 2 smart tvs, fridge , oven , stove burners, shower , hot water, roof ac, battery bank with solar, microwave, power hook up, out door shower and indoor shower, storage, custom rear bumper bike rack and surf rack. used daily for last few months since purchased new.