I also picked one of these up recently, a bit more complete but everything is rotten or seized... It was in a garden in the New Forest since 1993, so it must be the one mentioned earlier in the thread. I'm currently stripping it down and almost ready to lift the body off to sort the chassis, engine and drivetrain. Very tempted to come up with a diesel swap, but not sure which! VW and Merc engines can be mated to the M45 box with off the shelf adaptors, which is an option...