I have an AE101 4AGZE (best GZE you can get) wiring harness that was converted by Dr. Tweak wiring services (have paperwork) to put a DLI MAP AE101 GZE into an AE86. It also comes with the DLI/MAP GZE ECU and has the option to keep/run A/C (this costs extra). The harness is like 100, conversion cost me 460, ECU's run about 100.
So take it all for just $500. Located in Tampa, FL. Will ship, buyer pays shipping + PayPal fees.