I've had good experiences with
Allmaz in Clayton. Bit pricey but always seem to have what I need. Could try them.
Jollys in Dandenong have a
BA in stock if you are happy to pull the seat out yourself. Also says the Ringwood Jollys has one, but the images on the site don't match.
Plenty of other wreckers, not sure where you live, just google them.
