I guess it's because this coach built was designed around the Commer (check out the flutes in the rear body) that makes it look so right[^] If you are after some late 70's early 80's retro then this is the one[8D]
Did you know they even left the molded flutes in the caravan body even when fitted to other chassis Ford, Bedford for example - but looks a damned sight better on a Commer/Dodge