Physically it will fit no problem. But you would also to swap the ECUs, the gearbox and the exhaust! There is no way you could convert the 2JZ lump to run the TT sequential turbo set-up as the internals are somewhat different (no oil spray bars on the piston undersides etc.). A better, cheaper bet would be a N/A-T conversion, fitting a single turbo and fuel ecu, bigger injectors (440cc) and a head gasket would see a healthy rise inpower, retain off-boost torque and be cheaper and easier than a full TT engine/gearbox swap :)