Ford in the UK have the part for:
ST Snorkel: 4359190 Tube Assy - Air ~ £21 inc vat
21 quid these days is only about $50 aussie. I'd be scouring eBay. Hang on - I will be scouring eBay, so you should just buy one from a dealer and let me know about any you see going cheap on eBay! I don't need the competition
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MK