I've never done this swap but I do know that the connectors where the engine harness meets the dash harness are completely different between the 1g dsm and the GVR4. I'm sure most of the wires are the same color but that's about it. Also there will be some things under the hood in different places that will not match up, the ac switches for one. If someone was willing to go through the manuals and do the necessary modifications it could be made to work though. I personally think it would be easier to add the TCU wiring to the GVR4 engine harness. Or find a Galant GS or GSX engine harness with an automatic and add the needed wires for the turbo ECU.