Not necessarily. My Whiteline Watts propeller failed about a week and a half ago, after almost a year on the car. Obvious bad weld (hole is nearly completely smooth)
Caused the lower arm to drop and drag on the road at highway speed:
Aggravating, sure, but Whiteline has been good...
Just a minor update on this ancient thread. I contacted Tremec earlier this week regarding availability of the S197 T-56 Magnum. The answer I was given was "It'll be in full production by summer 2011"