Paul,
Can you upgrade my CSMK2 040 to an 060?
I could, but I need parts to do it and the CPU. Here is the parts requirements.
Proper Oscillator for the 060. The one for the 040 would not work. Depends on the speed you want. If you are putting in a Rev 6 060 I believe the can go as high as 75-90Mhz and remain stable. Not 100% sure on the MK II. I am not a fan of OC processors myself. (overclocking above 66MHz WILL make the SCSI Controller fail if you have one and faster clock needs faster memory) I have only tested at 50MHz
A LT1085CM-3.3 voltage regulator to change the board from 5V to 3.3V
Three 1N4001 equivalent diodes.
The rest is all desoldering the tiny jumpers and moving them and resoldering them in place. Your 040 should be socketed if I am not mistaken so its very easy. I also would want to put my standard disclaimer that this is major surgery and if something were to go wrong after completing it I cant be completely at blame

I havent killed any yet that were not close to being killed in the first place though.