The EJ bolt pattern is the same. And it's the EAs that aren't symmetrical, EJs are. That's part of the issue with the EJ swap...lol I'm really not sure. EJ flywheels should have the same bolt pattern as well. There is definitely a chance I'm wrong, but I have never heard of them being different, and never personally seen a difference. When you pull the motor, just check it. I know they only bolt on one way, the holes are not evenly spaced, but afaik they are interchangeable!!