Depends on how much time you are willing to spend on the battery, plus the cost of the materials. I would just use it as a core from the place you prefer to purchase batteries. I buy all mine at AutoZone.
I replace mine every three years as that is when the warranty goes out. I do not have the time, nor patience to deal with a flat battery on the side of the road.
Remember, time is not free.
If you plan to move forward with the revival, keep us posted. It will be an interesting read.