Yup, thats all you need to fit the engine in
obviously there's added extras that you need like FMIC, radiator, wiring harness etc. Its a pretty straight forward swap - mine is taking ages purely due to lack of funds and the machining of my block is taking ages
2JZ engines are usually around £2K plus I'd recommend that you change to a single turbo - nobody seems sure if the twins actually fit in the 350 engine bay.
The only people that I know of who offer this kit are 2JZ Swap/Tech 2 Motorsports which is the kit that I bought and you get a LHD subframe.