When I bought the car it had no seats, as built for racing in 1976 it was fitted with a seat from a powerboat but that was long gone and I’ve only seen it in photographs.
It’s a little early for these but I discovered some electrically operated front seats with picnic tables from a Daimler XJ40 on E Bay and matching rear seats on Facebook marketplace from a Jaguar XJ40.
The front seats fit well, they are much smaller than original MK8 seats. The back seats are the exact width but the backrest is shorter so might need some modification. It looks good though.