i am after a van for work, already using car, but i want my wife to have that and i get a van but i also want a 4x4 for a laugh at weekends but thought maybe if i could use a 4x4 for work id be laughing as wouldnt need 3 vehicles !! I only need a 400 litre tank , could it be possible, anyone got any tips or pics, ot what are the disadvatages, where do you put pump? and battery etc?? Do you have hardtop and tailgate??