Try contacting
IKON Suspension in Albury, dicko. I've sent a few Ozzies that way with some success lately, altho if you tell them that Peter Aawen from SpyderLovers or OzSpyderRyders recommended them, they'll most likely just say '
Who?'
They do some pretty good Spyder suspension replacement units, at least as good if not better than much of the more expensive a/mkt gear you can get in Oz; they're just up the road a bit from you; and they'll likely have something that'll significantly improve your ride & handling over the OEM gear; only you might need to talk to them rather than just rely on their website now that your Spyder is no longer a current model; & they
REALLY know what they're on about! :thumbup:
There's others here in Oz who'll make exactly what you want too, but I don't think there's anyone closer to you who knows Spyders quite so well as IKON.

hyea:
https://www.ikonsuspension.com/