'68 Barracuda 383 4spd - throw-out bearing/other issues?

thnx -we are planning to replace Z-bar, clutch adjustment rod, and TO and pilot bushing. I watched motor and trans lift slightly as he pushed down clutch pedal. Need to see bolts are tight I suppose. Noise thrashing/grind/dragging soind as you let up clutch pedal about half way engaged- fully up it goes away. especially notceable in revers but also in 1-2-sometimes 3. thnks for all comments