hi, can any member tell me are the back lights on these 2 models the same dimensions/fittings, thanks

You are talking about two different vehicles here. Are you interested in the LX470/ Land Cruiser's tail lights, or the GX470/Prado's tail lights? If you are interested in European/different country's Land Cruiser tail lights, do keep in mind there are Land Cruisers in different countries that have the half door setup (like on the Suburban) which means that their spare tire is mounted on the back, and the tail lights were cut in half.