Removing turbo nuts... HELP!

[Ameer Antar]

I was just wondering if anyone could give me some advice on removing the 6 nuts that hold the turbo's exhaust turbine housing to the bearing housing. I've soaked 'em w/ PB Blaster for days and even heated 'em up real good. After heating 'em up, the stud actually snapped on one... not somehting I'm looking for, so I stopped. I'd appreciate any advice or encouragement! TIA.

-Ameer