Pretty sure shag carpeting was still 'a thing' in the early 1980s. This has some of the Day 2 cues I remember when I started buying cars in the mid 1990s - the shag carpet, the Super Boot, the Suntune tach....
Sounds like the original 455 is long gone, but overall, looks pretty decent and the buy-it-now isn't too outrageous at $20k.
Link to 1970 455 GTO auction
242370Z116778