From Manufacturer
Convert your Panasonic EVA1 camera to PL mount using the PL Mount Modification Kit from Wooden Camera. All necessary tools are included for the modification of the EVA1 to be performed by the user. The PL Mount is made of aircraft-grade aluminum and includes a PL port cap. Shims are provided with the kit for adjusting back focus. If you choose to go back to EF mount in the future, you can do so by reversing the steps in the process.
Note:
While the vast majority of PL lenses are compatible, due to the ND filter turret on the EVA1, lenses with a rear protrusion longer than 1.3", measured from PL flange, are not compatible.