Hi Dave,
Long time!
Shame to hear about the strut failure.
I thought you've said previously that you had Bilstein on your Kat?
Anyways, I brought in front & rear Koni yellow sports struts for my Kat from the US (Tirerack) some time back. You can maybe give them a try?
I remember when looking locally at the time the struts were available but of course prices were inflated. Online research showed the product codes to be the exact same here or anywhere else in the world so ended up a given going the US approach
Cheers