Elvis on the Edge of Reality

Peter Walker, a 19-year-old orphan in 2020, is transported back to 1953, when he registered as Elvis Presley under the guidance of Sam Phillips at Sun Records. A few months later, when Elvis Aaron Presley could not sign a contract at Sun Records, he left his legendary path to lead a normal life.
67 years later, in 2020, Peter Walker/Elvis Presley is now 85 years old and lives in the Graceland mansion. He is scheduled to visit Elvis Aaron Presley, 85, and intends to divulge the truth about his time-travel journey and present him with a gift.
With knowledge of the future, how did his life turn out compared to the original Elvis?