you should be fine. The rom is based on tmous as previously stated. Read through the thread at xda and im sure you will find someone with the us hd2 who has flashed it. All the roms in this thread have been flashed by users who took the jump to test for the better of the community. Go ahead and do it and post some feedback for us all. Search around at xda as well, I remember seeing something recently about a way to recover the device if bricked as long as it was unlocked by hspl.

Side note: update your device info so that if you ask questions in the future there isn't a question of if you are asking about the HD2 or posting in the wrong forum.