Let me throw out a layman's thoughts. Sounds like your pressure plate isn't releasing all of the way from the flywheel. When you push the pedal down and move the shift lever into gear do you get a grinding noise. These systems are pretty basic. Movement of the clutch petal causes the clutch master to move the slave cylinder. Etc. first make sure you use the collar that matches the clutch pressure plate you ordered. I.e. A 240 collar for a 240z pressure plate etc Bleed the master cylinder and slave to remove all the air. Turn the adjustment rod to make it longer. Put the car in gear and push the clutch down. Start the engine. Does the car try to move? Or are the wheels turning if on jack stands? If so adjust the rod longer. Keep going until you know the clutch has released. Try each gear before releasing the clutch. If everything is good let the clutch out slowly to see if the gears engage If so you are close. Do small adjustments to get the pedal to engage where you like it. If you run out of adjustment the you have a mechanical issue. Wrong pressure plate or wrong collar, broken bent incorrectly installed clutch fork, bad master or bad slave Sorry if I am repeatting what others have said. It how I would go about it. Sent from my iPhone using Classic Zcar Club mobile