This one sounds perfect to me... But my stepdad told me I could do the same with a 26 inch glasspack... I think he's full of it
He's not. Exhaust sound comes from the muffler, its volume, packing, baffles, whatever. Changing just the muffler will change the sound. I put a Supertrapp (basically a tunable glaspac) on my '95 Probe GT and had people asking me all the time "What have you done to that engine?!!??!" The car was bone stock other than the muffler.
They have plates over the outlet, exhaust exits between the plates. Fewer plates is higher backpressure, more bottom end torque, quieter. More plates is less backpressure, better top end, louder.
Someone not familiar with them will ask you why the exhaust has a cap on it.