Nice build! Don't forget to swap oil pans from the 22r to the 22re and change the sump.. 4x4 is front sump to clear the front axle and 2wd is rear sump. Sump I mean oil pickup.
Do you have and efi gas tank lined up or are you going to run an external pump for the fuel injection?
On a side note does anyone know where I can get a complete wiring diagram for the 2wd on the internet for free??