1000000000
Seriously though, its cheaper to rebuild a VQ and go TT than it is to do a 2JZ swap.
At a minimum you need
2JZ engine
Wiring Loom
Subframe
Engine mounts
Custom gear box mounts & adaptor plate, flywheel and clutch (If using 350Z box)
Supra gearbox & prop shaft (If using supra box)
A single turbo conversion due to lack of space (Twins will fit but its VERY tight)
Custom down pipe & exhaust
FMIC with custom piping
custom hoses for the radiator and cooling system
new hoses to reroute the fuel system
Custom hoses for things like the power steering tank
either a race tech dash or the convertors to convert your speedo to work with the supra engine
ECU
A @*!# load of wiring work to get everything talking to each other
and a lot of patience
Also bear in mind, that the only off the shelf conversion kit is designed for a LHD car
I know how much I have in this car down to the last penny & it would never have gone ahead if I didnt have a Supra to break to make money back