I owned a british car once, needed a new bonnet. Went to a salvageyard and bought a bonnet from the same series, 35 serialnumbers apart ..... didnt fit by a long shot and the holes for the hinges were offset. British Quality Manufacturing right there
One British motoring journalist once said "They have been building E-type Jaguars for so long they could make them blindfolded. I'm sure that's what they did with mine."