Lots of pictures from the progress so far:

Old head before removal:
[Linked Image from lh6.googleusercontent.com]

Head removed, hoses stuffed with rags:
[Linked Image from lh6.googleusercontent.com]

More plumbing removal:
[Linked Image from lh6.googleusercontent.com]

Holding tank removed from v-berth and cleaned:
[Linked Image from lh6.googleusercontent.com]

New head hoses with new vented loop:
[Linked Image from lh4.googleusercontent.com]

Holding tank replaced with new hoses attached:
[Linked Image from lh4.googleusercontent.com]

New deck fitting for pump out:
[Linked Image from lh4.googleusercontent.com]

Fitting the new head:
[Linked Image from lh3.googleusercontent.com]

New head installed:
[Linked Image from lh4.googleusercontent.com]

New head hooked up (no power yet though!):
[Linked Image from lh6.googleusercontent.com]