Shane, those are what Kev refers too as "blades".
If you are not getting an '08 car then you will need the X10 rocker posts, Lunsford M4 turnbuckles and Big Bore shocks to round off the already awesome package.
I recommend to carry, as Kev said, wishbones, front hubs, ball joints, driveshaft buds/blades, spur gear and one diff gear just incase until you find your feet with the car and discover what, if anything, you find to be weak.
You won't be disappointed with the pred, I have been driving one forwhat around 6months now and my 4wd results have got better and better.
Give Lewis and Yanina a ring at the shop, they're always very helpful in advising and helping you with what ever you need.
any questions.. just ask