I have a set of used arp head studs for a 6.0. They are not very old as the truck broke the crank just a few thousand miles after they were installed.
$300 shipped

Also have 2 rebuilt heads that were installed same time as the studs.
$250 each plus shipping

I have lots of other misc parts like egr,hpop,oil rails,rockers,it's a complete motor I'm disassembling so if there is some part you need just let me know.

The engine is an 05 year model