No problem. A word of caution if you do find a zumo 660/665 to try that conversion. Some zumo 660 have P/N 105-01452-00 which likely won't convert, other 660 and 665 with 01452-10 or 01452-02 might work for conversion. Regardless matching PCBs are only an indication of conversion, mismatching are a definite no-go. Keep the original HWID and use the boot.bin of the donor device is safest but less certain conversion method. Good luck.