Nabbed a VIN off a 02 STi in the Osborne Park workshop from a helpful bloke.
For anyone that has done a 02-05 STi EJ207 transplant into their WRX you can use this

VIN: JF1GDBKH33G 030 650

Sensor Crankshaft Part Number: SU-22053AA052
This part number is the same for 03-05 WRX's as well.

Shock Horror Cost $326.15

;(

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"You can turn your back on a person, but, never turn your back on a drug. Especially when it's waving a razor-sharp hunting knife in your eye." - Raoul Duke