I agree, I wouldn't recommend anyone doing it, I expected the wiring part to be simpler and since Tony is selling this (Though I believe he terminates a new J1772 handle on the existing cord) I figured it would work well. Yes, I am enjoying the project. The main reason for doing it is that with how affordable these are ($550) and with the federal tax credit I actually made money by selling my Clipper Creek HCS-40 and getting this.
That's exactly the plan, the original cord set is nearly all intact and will be simple to put back on.
I will be ordering his jdapter when it's released as it would have been nice to be able to test the HPWC before swapping the cord set.
I'm glad I found this thread, thanks for posting it. I'm in similar position (getting a 2012 Leaf SL to last me till my M3) and was thinking about the same cable swap... I presume you still have the modified wall connector? If so, is there any chance you could post some pics of the innards? I'm curious about the resistor-to-ground (type, location, etc). I like tinkering, and am very comfortable with electricity, but just a little jittery about frying something in the EVSE (or worse, the car...) even though 30 amps is no super-charger... Any who, any extra info/guidance would be appreciated. Thanks.