a bit of coaster trivia perhaps?

Which coaster, which by the way will be celebrating its 30th aniversery tomorrow, was the tallest and fastest coaster in the world when it opened on March 31, in 1973? Tomorrow this coaster will be giving out the same "red badge of courage" pins it gave out when it opened 30 years ago, and will also be hosting a 30 marathon for members of the ACE. I believe i gave sufficient hints, now do you know the answer?

The Great American Scream Machine