How many cubic centimeters does my kz A1 have now?

Because the cylinders were oval-shaped, I increased the piston size to 72mm.
What was the increase in cubic centimeters of my KZ A1?

Thank you

66  mm = 903 ccm
70 mm = 1015 ccm
71 mm = 1045 ccm
72 mm = 1078 ccm
73 mm = 1104 ccm

Scirocco Thank you