For the most part, hull construction is model and plant specific. You will get a quicker answer if you mention your model and year in your question since some of us may know the answers for your particular boat.
Some construction methods are changed during production so if this is a critical issue for you, you need to contact Sea Ray customer service with your hull number and ask them to look it up for you.
There has been a a lot of idle internet conjecture about cored hulls over the years. In actuality, there have actually there have been very few and nearly all of them have been traced to improperly repaired physical damage, poorly sealed openings cut in the hull or holes cut in the wrong spot by dealers or owners for mounting transducers, etc.
If you are worried about coreing as a construction method, almost every boat Sea Ray has ever built has a balsa cored deck and you have a much greater risk of core problems from failing to re-bed deck fixtures, windlasses, rail stanchions, spotlights, windshields, etc. than your hull.