You are going to have two basic suspension upgrades. First will be taller/stronger springs and replacement shocks. This would be your Old Man Emu (ARB) stuff. Your second option will be adjustable race style coilovers. This would be your Camburg or Donahoe type stuff.
I would try contacting ARB USA or one of their vendors like Slee Off Road and find out how long it will be until they ship some new replacement springs and shocks over here. If you want to clear a larger tire and upgrade your carrying capacity some, then OME stuff may fit your needs.
I would also contact Camburg Racing and Donahoe Racing. Don't mention either shops name to the other since they hate each other

They have both worked on kits for the new Tundra. Both of these shops will be prepping for the Baja 1000 so you won't get hold of anyone until the race is over. If you want to haul ass, then this would be a good option for you.
You could even try calling Allpro in Hemet. They have done a bunch of products for the FJ Cruiser and new Tacoma trucks. Who knows, maybe they would want to check out your truck?
Or you can try and contact the shop that prepped the 200 series for SEMA and see what they say. Not sure who that was?