This song was only available on the 1983 King of Comedy Soundtrack until he rerecorded it with different lyrics and backing band in late 90s.
I don't think you understand the OP Top Gun made 357.1 million USD at the box office in 1986 Danger Zone was the #2 song on the Billboard Hot 100 Neither movie or song were obscure. I sing Danger Zone to myself when I'm driving fast in traffic.