Well don't quote me on this one and some of the other guys may be able to give better recommendations but when I was looking for suspension on my VL Turbo I went to W.A Suspensions in Osbourne Park.... They seemed to know what they were talking about and had a wide variety of cars in the workshop at the time... From your family car, to supra's and such , to a dragster and even a cop car...
Don't know how they rate in pricing our the brands they stock these days though...
Brett