it depends on what mask the 68060 is. if its mask 71e41j the processor will run cooler than other revision. ie no fan needed.
all 68060 should overclock to 66Mhz
Except my earlier revision mask 68060. It's max STABLE operating speed was 60Mhz. Now that i have the latest mask i can easily put on a 66Mhz osc. But i still use 60Mhz to be sure

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