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With all the hassles removing dud glowplugs Has anybody looked at Manifold filiment plugs as an alternative?

www.beru.com Page 13
The filament glow plug
Design and function
Technical data
As already described, a small intake air temperature rise is
sufficient for the engine in cold condition for a clean start.
The open, hot wire filament delivers sufficient thermal
energy to the passing intake air to guarantee this in the
starting process and the warming-up phase. The warm air
is generated by the electrically operated systems.
The hot filament is held and stabilized by a ceramic support.
Rated voltage:
5,5 V; 24 V
Preheating time:
approx. 30 sec
Switching duration:
up to 15 min
Permissible ambient temp.:
–55 °C to 150 °C (no current)
Temperature of the heating element:
up to 1,150 °C
permissible
Installation position:
arbitrary
Connection:
single or twin-pole,
various versions
Electrical output:
400W to 600W heat output

400W to 600W heat output.
At 12v that is up to 50 amps. Also the glow plugs on the 4jx1 are monitored by the computer for emissions reasons

The glow plugs on a 4jx1 is far easier than a 4jb1 or 2jg2 engine, genuine are expensive but last far longer than aftermarket ones