The plate is held on by four small screws.......
Actually more likely the whole bulkhead is not original, since they rust! This is why you need to find the number on the chassis. If it was built in Australia (most likely, but there are a few imports floating round) the number is on the LH rear back spring hanger. About the only actual chassis change between 'B' and 'C' (1967) is the mounting of the handbrake relay pivot.
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