The good news is you should be able to get replacement ribber grips from Taurus or Hogue monogrips from getgrip.com (model 73000 I believe and highly recommend). The bad news is all other titanium parts probably can't be found (short of buying another M627T). Small/standard Tracker parts can probably be purchased from Taurus, although some parts require you to send them the gun for replacement.
Congrats on the M627T, it took me a while to find a good one.
Coop