tigerboy rei i

With a j spec swap, isn't the engine harness on the wrong side? If so, I had a thought. The stock TII ecu can run the engine with no body inputs, right? And a car without an engine can still run body controls with the stock ecu and battery still hooked up, right? Then, couldn't I make the TII ecu a standalone kinda, and leave my N/A ecu hooked up for the body goodies?