Hi Keith,

The XJ-SC Cabriolet was built on the basis of a nearly completed XJ-S Coupe, with the modification concentrating on cutting off the roof and also adding some strengthening metal work. The fuel tank as far as I’m aware, retained the original Coupe’s – hence why you can retro fit rear seats from a Coupe into a Cabriolet, complete with the rear seat belt mounting points being there ready for you to use etc.

Laurence