My wife and I liveaboard a 1983 E40 in NW FL. I am also in the process of doing many upgrades as I'm sure everyone is. I look forward to exchanging some ideas with other Endeavour owners now that we have this spot.
Some of the projects done:
All new black water hoses
Stripped and revarnished cabin sole
Installed flat screen tv and dvd player in cabin on starboard side above settee
Re-plumbed both shower drains
Change all ports with New Found Metal ones
Install new power distribution panel from Blue Sea and go to 50A service via two 30A runs
New hull paint
New topside paint
New thru-hulls (those that are still Groco)
Update electronics with Garmin Suite
By the spring of 2015 I should have all of this accomplished!