Five ply shells have no reinforcement rings on the interior edges of the shells, just like yours do not. My 1977 Slingerlands are 3-ply and do have the rings.

REO Speedwagon...cool.

You don't really tune a drum. You tension the heads to get the best possible tone and resonance frequency out of them. You want them to vibrate as one. You can imagine that when your stick strikes the top head, it sends a wave of air down towards the other head. When that head is struck by the wave, it in turn bounces the wave back up to the top head...which bounces it back...and so on. The shell also adds to this tone and vibration. It's somewhat of a dance...only very fast and unseen by the eye. With that in mind, you start with the given shell and pick the best heads you can for the job. This is a can of worms that can really break up some families and send wives home to mom. Rough talk for sure. The only absolute is the thinner the reso head, the less resonance you will have. If you go too thick, it will be somewhat restrictive to the waves. So you have to find the balance. I found that the Ludwig Medium coated heads work great as reso heads. You want to tension them so that they compliment the batter head. And therein lies the rub. Do you tension the batter tight...or loose...or medium...or what? It really all depends on your playing style and the music you will be playing. Should you use thick heads, thin heads, coated or clear, remoevensaquarianludwigorwhat??? There are more choices out there than there are socks in Martha's dresser. You really need to do some research and some experimenting. It's costly at first, but the results will be worth it. You will know what you like and in what config. Good luck and enjoy the kit.