Mine was plug and play. My 3rz was from a 2001 prerunner auto 2wd and I found a 2001 3rz ecu 4x4 manual. plugged right in for me, did not have to move any pins from what i remember.I’ve been finding conflicting information online, does anyone know if an auto 3RZ ECU 2WD is plug and play (as in connectors) with a manual 3RZ ECU? I know some moving of pins may be required but I’m wonder if I can get a manual ECU to avoid codes for the automatic transmission.