what is the dash plug stuff? I will post some pictures because its kinda hard to explain. And yes I do still have my KA engine harness, but the harness didn't branch out like that. or with that many wires. Plus the engine harness didn't unplug from under the dash, just off of the ECU.
As far as the engine not coming with a MAF, downpipe, and ignitor thats okay. MAF has been upgraded to a Z32tt MAF and downpipe has been upgraded as well

Ignitor chip I believe I just unpluged the harness from it. And if its missing not too worried because I believe the Q45 share the same ignitor as the SR20DET.
Any help is greatly appreciated...thanks,
Seth