FD1 civic speaker rings

I want to change the rear speakers out of my 2010 Civic VTi... so I decided to buy new speakers and also take my parcel shelf and everything else apart today.... only to find my new JBL's don't fit and don't mount into the hole. great.
Anyway, using the internet I found that I will need some special Honda Civic specific spacers to fit my 6.5" JBL's in, but they are only available in the US of A. I don't want to make my own spacers either because I know they'll be pretty crap.
So do they sell these special spacers anywhere here in OZ? Pretty desperate for one right now :S

Thanks.