I'm right in the middle of installing my new Centerforce Dual Friction clutch in my GT, and I noticed that the clutch slave arm that moves the throwout bearing can move back and fourth about 1 1/4 inches. I remember that it didn't move nearly that far when my old worn out clutch was in there. I did have to remove quite a bit of material from the flywheel to get it to clean up. Is this an excessive amount of clutch play? Or can it be adjusted out somehow? Thanks for the info.

Nothing to be concerned about. I have had the same worry when I was doing my last engine install. Once you have all the parts installed, that play goes away.

There is no adjustment, so the proper thing is to shim the flywheel/crank join to compensate for the material removed in resurfacing the flywheel.