Re: doing a 4 wheel alignment, what preps needed?
Are you lowered? If not you should be ok with stock parts.
If you are lowered there are a couple options. the MB camber bolts for the front can be put in but that is just static adjustment really, nothing can be dialed in with those. You would basically just be checking to see if they were enough to get you back in spec.
The other options are k-Mac front + rear bushings. These are $$$ but will get you enough adjustment front and back to get in spec. These require a press and possibly some other tools to get everything disconnected (think a ball joint tool is needed??) and back together.
The only other solution is for the rear only, you can make some camber arms and install them yourself, these will give you the most camber adjustment but there are some problems with sway/camber contact with this setup on some lowered cars.