Coilovers Suggestions

[Ford Falcon XR6]

Hi Everyone

I'm currently building an Au Track car and i'm having a little trouble sourcing a coilover kit for it. It's a Sedan with live rear end I've spoken to my local suspension wholesaler and they said they couldn't supply anything. Also looked around on evilbay and google and couldn't find much. XYZ do I kit but their kit is for occasional track use as is the pedders kit would these cope with track only use ?
I'd like to go with tein as I've heard lots of good things about then but i'll only be able to get fronts (which are ba ones) and i'd prefer not to mix and match.
Could anyone give me their thoughts or provide a link to a suitable kit ? I want something that is going to last and be reliable. Comfort isn't an issue as the car will never see a public road.

Cheers Lorenz