My dad bult a couple of campers on commer base vehicles
Spent many nights away in them , the 1st was a pop top with louvre windows (boy did they rattle while travelling) , the second was a high top. Remember going to ireland in one and also breaking down on the isle of skye.
Had to let the tyres down on the high top to get it on the Isle of Man ferry.
Must see if he's got any photos
Dad's now 80 but still has a camper (a devon built toyota hiace) which he goes to music festivals and tows his canoe down to the wye valley for weekends paddling
Rich