You can use a 5sfe tranny, or one off a 6 cyl Camry or Avalon. or a 3sge tranny, or a 3sgte tranny from a MR2 with a little modification. The Camry engine is the strongest of them all. The 3sgte from the MR2 is a really good choice cos it come with the LSD. Trannies are easy to find, its the engines that are a pain, unless you import.