Lots of pictures from the progress so far:

Old head before removal:


Head removed, hoses stuffed with rags:


More plumbing removal:


Holding tank removed from v-berth and cleaned:


New head hoses with new vented loop:


Holding tank replaced with new hoses attached:


New deck fitting for pump out:


Fitting the new head:


New head installed:


New head hooked up (no power yet though!):