I bought mine from MCB, nice guy to deal with. Also, read the install instructions on the AAW site before you buy. If you get a classic update, you will lose the external voltage regulator and ammeter. And it's setup for HEI.
The rewire is a fun project! Just get the correct crimpers, a good wire stripper,heat shrink and loom tape. Plus I did a fair amount of soldering.
The AAW kit was nice. And like said above, keep your headlight switch you may need it. As of time I bought my kit there was only one manufacturer of the switches and they are not too good quality. I don't blame AAW, they want to give you what you need, that switch is all that's available to them.
Have fun!
j