He is building mine as we speak. They are hand made units, takes about a week to make. I am also installing a 16x2 line LCD display in my passenger side center AC vent for ECU readout, and wiring the manual shift mode to the Cruise control lever. "cancel" (towards you) will be upshift, "up" will be downshift. I know up sounds weird, but it feels natural if you play with it.
My goal is to actually adapt a built 5spd auto from a IS300 to my 92 SC300 1JZ, and control it by the V4..
If all else fails, I'll bring it to my local auto electrical shop. He had no problem wiring up the 1JZ, so this cant be hard for him. Ill do it before i install my PFC so i can still use the OEM ecu to control it just in case.