You will have to locate the thru hull and high speed pick up for the bottom of the hull.
You then need to install a valve.
Then a pump, the wiring and switch set up for it.
if it is not plumbed with a pipe for an intake into the live well you will have to make one, install it at the top of the tank, on the inside, angled jet so it shoots along the side, not straight into the tank, creating a circular water pattern around the inside of the tank.
You will have to install a pipe for the overflow inside and plumb it out. Factory ones I saw drained into the bilge. not a great design in my opinion.
If I were you I would use the space to store boat items and not use it as a live well for two reasons.
If the plumbing is not there from the factory it is going to be a royal ball buster to install.
Second, the factory set up for these live wells was a marginal performer from all accounts I have heard. They tend to leak onto the floor when the boat rocks or when you accelerate. They were shallow type of design, whereas a Contender in floor is not as wide but much deeper.
Third they are low so will need to be either plumbed with a macerator pump to pump it up and out of another thru hull on the side of the boat, or do what the factory did and let it drain thru the overflow pipe into the bilge. That is not a good set up with your bilge pump acting as a live well pump and putting the fish smell and debris in your bilge..
I bought a separately purchased live well tank and used that with a overflow hose that went into the motor well area. It worked great.