Does anyone offer these as a kit? I'm very interested in doing this when I do my lift and I'm
not sure I'm cabaple of doing that part of the mod.

There is a company that makes the flanges, but they are in the UK, it wouldnt be hard at all to have a set cut out at a metal shop with a waterjet.

I live in redneck country... Water jet is unheard of around here lol ill do some more checking around and see what I can come up with. How wide do the spacers need to be for the cv shafts?

LOL, ya want redneck country, that is where I live as well, it is at least a 2 hour round trip to get to anywheres decently sized with any dedicated CNC/waterjet shops, but even out in the boonies you will find CNC and machine shops etc, even a simple machine shop can pop them out, or anyone with a lathe and a drill press.

what is the hagen mod and how do you do it?

There's a write up here in the archives or google Hagen widening mod and you'll get all sorts of hits. There's a really good write up on bits4vits