Hi,
Not sure if you ended up finding a firepower, just thought I would mentioned it is one of my favourite games so when we are in the US we are always on the hunt for them in any condition.

Just sold one that we had done all but the cabinet on :

http://www.pinballclassics.com.au/product.php?id=750

And have an original one here at the moment for sale :

http://www.pinballclassics.com.au/product.php?id=733

We have been doing a lot more restoration work in recent years, so we could probably create you one at any level of restoration you might like and ship it to almost anywhere in Australia.

Regards,

Jason