Hi Ken,
You might try Centre Road Wreckers - 1602 Centre Rd Springvale 3171 (03) 9547 7377
When I was there a couple of months ago they had a reasonable FC shell, although I didn't get under it to check for rust. Perhaps you could give them a call.
Alternatively you could try this guy in Castlemaine:
Bought some parts on Saturday from an old bloke in Castlemaine who had an FC Wagon and a Panel Van he is wrecking. Most good bits already gone (isn't that always the case?) although I got some good parts, like a HR disc brake front end ex the FC Wagon (needs some TLC & new rotor/calipers), headlight trim, couple of original washer jets and a grill (complete with a badge).
This guys still does have some useable bits like front sub chassis, complete rear axle assy, steering box, Front right guard, rear tailgate & window for both (seemed in reasonable condition given that it was raining at the time of viewing). Also had other parts lying around along with a couple of EH's. Price was good for the bits I bought.
His name is Ron - Ph No 5472 3839
Trevor_B