I can buy engine, engine harness and ecu from 1992 soarer 2.5 tt.
I have 1994 sc400.
I heard than in 1993 ECU plugs was changed from rectrangle ones to supra style 3 by 40 pins each.
So ecu plugs will be different in ny 1994 sc400 and 1992 soarer but that is not case cause I will have right ecu.

my question is about anothers plugs that come with ecu harness and are plug-in body harness.
Are body harness plugs remain same in early (1992) and later (1993-1994) soarers?

 

you will have problems likely with the alternator and thats it. i had those problems since mine was a 93 and i got a 94 motor i beleive. it didnt match up with one bodyplug... search for my completion on 1jz install thread and theres answers in there.