6.0L Engine - Performance Rebuild

[GMCwzl]

I am thinking about rebuilding my 6.0L engine.
Has anyone seen any "performance" parts for the newer style engines? (cams, pistons, lifters...etc)
I've checked GM Performance, Jegs and Summit, but not found anything.

[TrailLeadr]

Can you give us any more info on the vehicle? Model, Year...etc

[GMCwzl]

Thanks Patrick,
I have a 2001 GMC Sierra 2500HD with the 6.0L. Auto trans. 9200#GVW.
I haven't seen any aftermarket high perfomance parts for this engine.