Wanted - front RH bumper insert or bumper for 105 Spider

[JohnLW]

I'm seeking the plastic inner for a RH front bumper half for 105 Spider December 1972 manufacture. 
Or failing that, the full RH front bumper assembly. 
I've discovered the previous owner broke out both the plastic mounting points, where it bolts to the metal mounting brackets, and substituted a generous amount of silicon to take their place. 
Id rather not have to pay what Classic Alfa want for a new complete RH front bumper, so if anyone in Melbourne can assist that would be terrific, and greatly appreciated! 
Cheers, John.