Nothing to say you cant just build your own chassis, it is what has been done with my build.
You find the body you want and then design the chassis round that. I am also not a huge fan of going the ute chassis way, but that is just personal choice.
Also you will be amazed at the stuff you dont need to have on your vehicle if you build from scratch. If you are worried about having to have windscreen wipers, then the easiest thing to do is dont have a windscreen but have a wind deflector