well look at reg number that will tell you or buy a different one that you can get more info on if you are not sure what you are buying ,You could ask about hymer in general ,build quality, the chassis it sits on is probaly a standard chassis ,either long short or extended,then it is down to engines ,pug or fiat or whatever else they use ,so do research that way.split it up chassis engine body then make your decsison based on what you find out