Just got word from Martin about a new Vcore mod guide for the MSI KT3 Ultra! Here's what he's saying:

The MSI KT3 Ultra board uses the HIP6302 chip NOT the HIP6301 I haven't seen any instructions on this version of this chip. The HIP6302 is paired with the HIP6602 for your CPU vcore regulation. Well you guys know all about Vcore mods so I won't bother going on and on...

MSI KT3 Ultra ARU Vcore mod'd @ Mods4me