Just had gearbox and engine swapped into my Felicia fun but have noticed the clutch pedal is now really high which it wasn't before swap over I wanted to do the clutch as well but had lack of funds. Could mechanic used old cable. Is there a way to adjust it or does it need all need a new clutch

Adjust the clutch cable by loosening the nut. The book says the clutch and brake pedals should be level. Depending on the clutch disc wear, you can lower the clutch pedal further.