If you’ve always wanted to see what a Canon 5D Mark II looks like opened up, you’re in luck. zakums06 over at DCHome converted his 5D Mark II to a mirrorless version for filmmaking purposes, and documented the whole mirror removal surgery:
To see the rest of the 23 photographs zakums06 posted, check out this forum thread. The mirrorless camera can still do photography, but you’ll have to use LiveView since the whole viewfinder system is gone.
Needless to say, don’t try this at home!