Interesting link, this quote may help in finding spares
"Spares
The Bongo Brawny body is the same as the Mazda E2000 commercial van sold in this country, the body panels, interior cab etc are the same so spares such as brake pads are available. But the engine is a different matter, it is mechanicaly different to the commercials, for instance the exhaust system is not standard and the engine is used in Range Rover conversions and in canal boats. For spares and servicing contact JOHN S LEEK Mazda dealer 8 KINGS ROAD, NEW OSCOTT, SUTTON COLDFIELD, WEST MIDLANDS B73 5AF. Telephone: 0121 355 0100 ask for spares and they will help."
Go to the top of the class - you clever aunt

You can't polish a turd - but you can roll it in glitter.