there are a few good threads on this site, this is one of mine
viewtopic.php?f=87&t=2971
you just need the torx sockets to remove the head, a torque wrench, an angle gauge for tightening some bolts and general tools
replacing parts depends on what you find, certainly the timing chain is worth removing
you could do the balancer shaft delete whilst the engine is out
viewtopic.php?f=87&t=5895&hilit=balancer+shafts