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DSR marketed a "big brake kit" that consisted of LS430 calipers and adaptors. This is the only "production" kit I've seen. There's no point in using LS430 calipers, it's barely an upgrade (if at all) over LS400 or Supra calipers that are a direct bolt-on.
I guess that's what you get for not doing research before buying parts. DSR hasn't made those kits for a very long time. Figs considered doing it but nothing ever came of it. You'll have to have something custom made, unless someone happens to be selling an old kit.