That was the year I graduated (2nd best summer ever!) I remember all the hype being not only about the six inversions, but the height of the lift hill (don't have it memorized, but something in excess of 120 feet, which was a 'wow' back then). I was on my way to Air Force basic training, and stayed at the then-Holiday Inn across I-75 from Downtown Cincnnati, and was on the 12th floor, looking out a window, and I told some dude standing there something like, "Man, if that new Vortex is over 120 feet tall, this is about how high the first drop is supposed to be!"
Didn't ride it until years later. I never go without my 3-ride-per-trip quota ever since. Happy Birthday, O Steel One!