Reply to "I put a Farrari slaver cylinder in. The Adjusting nut does nothing where ever I put it. My 1972 Pantera was working and will drive the car, But, When I give Full throttle it slip. Slips under power but will drive car Normally. ???"

Why didn’t you just install a Pantera slave cylinder? It sounds like you have more than one problem. Not going into gear usually means you aren’t getting enough clutch release. That will destroy your synchros in no time! This could be caused by the slave being incorrect or air in the lines. The clutch slipping under power would usually mean a worn clutch but since the slave was just replaced, it could be the slave isn’t retracting properly and your clutch is always partially disengaged. The first thing I’d do is throw away the Ferrari slave and get a real Pantera slave from a vendor. Have someone qualified install and adjust it. Don’t drive the car until the issues are resolved or you could be facing a $$$$ ZF repair bill.