I have the same year boat so sure my shower head would fit yours, if your ever in Anchorage shoot me an IM or email; I'll give you the shower head.
Before I even bought this boat I arranged for Kitsap marine to remove the hot water heat and fridge, plus they payed me for them. I find the space way more valuable because unless you take alone a generator the fridge is unless, same goes for the hot water heater.
To take a shower I use a Big Kahuna shower, just heat some water on the stove and mix with the water in the Kahuna. A 3 gallon Kahuna will give up to 3 showers.