I do socket the cpu and flash the firmware.
I have to admit that your BPPC could be a problem...
I have only upgraded BPPC:s with 2 oscillators but im willing to check your card and if im getting stuck you only pay the shipping costs.
A 50Mhz oscillator that you have onboard is ok for a 68060 clocked at 50Mhz so it should be no problem, i think.
Adding a second oscillator for overclocking the 68060 cpu, again i have to admit that i dont have the knowledge if this can be done.
Regards,
PG