good luck, you would probably be better off ordering KMR parts from www.tigertuning.com. The only things they don't have I believe are the trailing arms and trunk cage.
Yeah that will probably be your best bet honsetly. Unless you want to troll the forums for some part outs but there isnt any at the moment. I got a buddy selling a KMR lower tie bar and vbrace if you want those they are modeled after the GT Spec