plumbing for cast iron bath

i have an old cast iron bath which is pretty old and is the origonal bath from the house. It was removed, put under the house for 10 years and has now gone back in. Thing is, it has a 2" imperial brass outlet which has a slight dent in the thread, but i am having trouble finding a brass barrel union to put on the end to connect it to existing pvc pipes. (a rubber universal will suffice if i cant find a brass/pvc connection.) it currently has a polypropylene (?) fitting and some silicone so it doesnt leak at the moment.

i really need a new brass outlet as the grate is missing from this one. i live in Melbourne if anyone can tell where i can get one.


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