EM1 with B18B1 troubles

[Roc Steady]

recently picked up a 2000 EM1 (police impound) with B18B swap--im trying to UNbutcher it now-not finding info on harness wiring ID or what all was done to it. Im looking for info on how to "reverse" the swap and what all would have been done to it? All i found on search was how to go from and Ek EF to a B16A2 not opposite--any info is appreciated it

 

[Xanatos]

So to clarify you want to go from the B18b1 back to a B16a2?

 

[dilbeckskate]

More than likely everything is stock and to put a b18b in one you reuse everything and swap ecus and just leave vtec unplugged, youre also set up perfect to do a lsvtec head swap , post some pictures of it