I'm not exactly sure when they did this, but bmw changed the rear shock mounting screws to external torx on the top and bottom and I don't know where to buy them today. Hopefully I can get to this again sometime during the week after the sockets arrive and get some pictures of an actual f30 up.
The rest is exactly the same as an e46, this guide is all you need for the front.
http://www.e46zone.com/forum/topic/8...replacing-oem/
The rears you just need the e-torx sockets to unbolt one end of the shock, unhook the sway bar's top link (18mm) and lower the control arm to remove the spring. reinstall the spring and use a jack to raise the control arm to tighten the shock and sway bar mount.