That's a KK model right? Give CRDSTU a call (Murchison Products). CRDSTU has a range of lift kits for KJs, KK, Grands etc. Here is a link to his website:

http://www.murchisonproducts.com.au/

He uses special King Springs that he has made for these models, and usually Old Man Emu shocks. Most of his stuff can be installed by the owner but in the case of a KK front strut tear down and spring change someone like Pedders can do that for you.