I am going to have this exact swap done early next week. for simplicity I got a manual ecm and the manual harness also got the harness that hooks up to the clutch switches and it plugs into a plug that is already behind the dash with a jumper plug in it. from all my research into this it is a little more involved than what I first thought. at the very least you will need to have the ecu reflashed to a manual and that will need a vin from the same year manual car and you will have to modify the engine harness to get it to work, all the plugs(for the trans) are not the same.