a bit lost on the engine swap

[Chu]

so the wiring and ecu has to be the same year as the engine?? i also heard find a donar car without abs whats up with that is that true? i was thinking 89+ and every donar car i found had abs,lost.

[Daves2JZGTE]

abs dusnt matter the ecu and wiering need to be the same as the head do to plug changes in the diffrent years well 87 to 88 89 to 92 i think. Dave

[Junkie]

ABS does not matter.You just ignore it.The ABS system,is independent od the main ECU and will not throw any codes because of not being hooked up.To check ABS codes,there is a seperate diagnostic block,that you won't even have,as it's a body harness mounted system.
As for the rest of the wiring,it's all a year by year,car/engine.At minimum,you need both the main TSRM and Electrical supplement for YOUR CAR,and the Electrical supplement from the year of the DONOR harness/computer.
If you are not comfortable with custom wiring,or know someone who is,it can be very confusing.