centre roof mounted aerials were an aftermarket item but you could order anything from your holden salesman so if you wanted centre type you got it...
gaurd mounted aerial was only with the radio..no radio no aerial....gaurd mounted aerial is on a ball and can be adjusted to tilt back slightly..
if you are after a factory correct aerial get jenny to take a picture of her knob....the one on the tip of the aerial..:errf:
they are different to aftermarket...
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