I'm assuming you paid for these parts yourself (out of warranty) some ~$900 USD?
Make SURE you got the latest parts.
Here is picture of new vs. old flywheel design.
The new one is on the left and is ventalated so as to keep stator from burning up.
If you have the new one I recommend you do go to the extra trouble of installing it!
If you have the old one I'd trot back to the parts window and demand the good stuff!