Cheers, speedy.
My take on this is, it's not worth spending a lot of time chasing all over the planet, to find a cheapo aftermarket part, of probably dubious quality.
A [admittedly tightfisted] bloke I know insisted on fitting a set of cheapo replacement glow plugs in his HZJ75 series Landcruiser.
Didn't end well - one of the things dropped its end into a cylinder, and did significant damage...
