I have an 04 get transmission I want to swap into my 03 get, Infinity said I was comparable, I told them the vin #'s but the plugs for the wiring harness are different is there a way around it?

 

If it's an automatic you will probably need to swap the valve body.

 

Keep the existing valve body/tcm/harness. It's easy to swap them to the new transmission, look up the instructions for a transgo shift kit and you'll find good pictures for how it comes apart. Don't tear the wiring harness grommet, there's a snap ring to remove to get the plug to disengage I think. Make sure you get all the wires routed back through the little metal keepers on the inside, I STRONGLY recommend taking good pictures to refer back to.