AWD front end parts

[Motorcitydak]

Im currently looking into making my car AWD, Im just having a hard time figuring out what parts would be good to run. Ive looked over that Camaro build website and the guy says he is going to use a Cadillac STS front diff and I think c5 knuckles and hubs then run custom half shafts.

I know that the c5/c6 knuckles and hubs are good pieces and that the front hubs can accept a shaft since they are the same as the rear ones. What I do not like about them is that the upper ball joint is built into the knuckle. I want to run nascar type arms that have the ball joints in the arms. Does anyone have a good recommendation for some front knuckles that I could use? Im going to run 18x10's w/ 6.6in BS and 315 30 tires.

What Ive also been trying to figure out is what type of diff is the one from the STS? Is it based on a Dana 44 or something like that? I found one locally I can pick up with 0 miles on it with a 3.23 gear for $250. Ive also read online that the STS-V comes with 320hp out of the box but can be brought up to 600 or so with mods. Would this diff be able to handle that kind of power? My car will be somewhere in the 4-500hp and tq range.