Best bet is to call him (Leave a message if he doesn't answer):
Duffy
D.D.Machine
(360)649-4465
He's also on Ebay as
4x4machineshop
I didn't have any trouble getting ahold of him when I called, and he was pleasant to deal with. As for the cost, I don't recall (I bought it last October). I want to say it was around $450 shipped. Might have been more... or less.. guess the memory isn't as good as it use to be

The biggest selling point of the kit (IMHO, and worth every penny of the cost) is the one piece shaft, everything else you can probably hammer out yourself if you wanted to take the time to do it.