Sorry. Wasn't saying your way doesn't work. It does. But for future power, the 4v cobra pcm has a faster processor as well. And I like all stock, non hacked wiring when possible. Maybe Im picky. But whatever turn your motor.
Some of the connector pig tails are different from the 2v/v6 cars and the 4v cars. Also, the harnesses also changed through 99 to 04. If you have all the correct harnesses, use them! Door harnesses and deck harness are the same. Everything else has to be swapped. These are the easiest of all...
It is pretty simple to swap out all the wiring. Yes. All the wiring! The dash is the hardest part. But even the dash is pretty simple. Do it the right way. No splicing, or hacking up wires. If you have the full parts car, it is super simple. Good luck to you! You are welcome to message with any...