Thanks for the replies guys! Interesting arcane knowledge
@beachycove:

Identical, except for the small differences I noted perhaps?

@Quadraman:

When you say slot, do you mean the 64pin ROM slot? If so, why would an overclocking kit need to be plugged in there!? For sucking in some juice or because it actually came with a ROM?

Click to expand...

You need to use the ROM that comes with the chipping kit or it won't work. The kit comes with the ROM board, a couple of wires with clips at the ends that connect to the ROM board and the clock oscillator and something else I can't remember at the moment. There is also a power wire adapter to divert power from the floppy drive connector to a cooling fan for the 040. Also included is a strangely shaped card that plugs in to the Nubus slot in front of the PDS slot to power another cooling fan that attaches to the heat sink on the 601 boards. This Nubus slot is inaccessible when you have a 601 upgrade installed, so it is a good way to make use of it. I don't use the overclocking parts in mine because when I tried to install it in the IIvx case, the ROM board stood up too high and I wasn't able to seat the drive tray. I mainly wanted it for the cooling fans anyway, since my 601 card was overheating all the time.