Where's the Mac love?
Granted, it sucks that they didn't make it for every platform, but don't lose hope. You could always try Boot Camp or Parallels to get Windows running on your system.
I use a Mac as well, but even if I had a Windows box, I'd still be sculpting mine out of clay.
There is a thread on here which has (just) the helm, but that doesn't solve the rest of the armor.
(Hoping this doesn't turn into a PC/Mac thread...)