Yip ya need gearbox, Cradle,gearchange, prop and poss rear diff depending wot gearbox you buy and wot diffs in yours, UK box's need a 3.54 rear diff cos of the drop down gears been 1.1-1 in the box and the JDM drop down gears are 1-1.
Also think about which clutch and flywheel you want to use 5sp or 6sp