It sure doesn’t sound like a 1981 update. Sounds pretty much like the original, just a little more acoustic guitar and lower volume piano. Better studio, different singer.
1958 version by the Skyliners: https://www.youtube.com/watch?v=5B9AmwnU278
Janet Vogels soaring melody at the end of the Skyliners version is just lovely. Clean sound...no bluesy inflection...hits the notes clean, smooth, and way up there.
McLeans version pretty good also. If he had background harmonies and a soprano voice adding music...it would very good. I do love that song.