Well I did it!

378x9 (3.4GHz) @ 1.6VCore... and it's STABLE! Real stable!

I closed up all of the intake vents on the case and got things REAL hot inside while running Prime95. I then opened up the vents and let it sit and Prime for my whole lunch hour. The highest the CPU got was 52C. It idles around 34C. I also ran 3DMark05 which will immediately bomb out during the CPU tests if it's not stable. If it passes that test it will pass 24 hrs. of Prime - proved it about 5 times last week.

I'm happy.