I think there might be two different parts, just based on the pictures I've seen of both cap kits.

The picture above is has the capacitor wired to pins in the center. The picture in the Service Bulletin and I've seen around pinside has the capacitors wired with the 48V and ground wires on the outer pins of the connector. It is indeed the same capacitor, however.

Not sure what the right answer is as I have not received my update kits yet but there are 2 different part numbers for the update kits. I would think if it was the same part, they wouldn't create a new part number.

I just received both update kits and confirm the capacitors are identical in both kits as others said earlier in the thread.

One update part number includes 2 capacitors and instructions, the other part number includes a single capacitor and instructions. The reason for the different part numbers is different instruction sheets and quantity of capacitors in each kit.