Yeah it's DIY meaning you have to disassemble the motor, send the block off to be machined, reassemble with the new parts and tune...probably a $5k+ job depending on what shop you go to.
Current Car: '13 SANTORINI BLUE E92///M3
--6MT/Speed Cloth/ZCP (ED Thread)
Former Cars:'10 E90 335i MSport
/ '07 Interlagos ///M5
/ '09 135i
/ '10 E93 335i