Jaay:
I don't know exactly how far you have gotten, but, if the engine is not yet installed, you might want to consider checking the IMS bearing for wear or play.
Here is a link to a video produced by Charles Navarro of LN Engineering, which will give you a good idea on what is involved:
http://www.youtube.com/watch?v=xvLRMGs-Ti8
If you have the single-row bearing on your new engine, you can retrofit an upgraded, severe duty ceramic bearing without tearing down the engine.
You only have to remove the flywheel and the IMS flange to examine and/or replace the bearing.
IMHO, it is well worth the effort for the peace of mind it will afford you.
Regards, Maurice.