The script that Hunter S. Thompson and Don Johnson wrote and pitched to NBC was much darker than the series ended up, and wasn't particularly suitable for prime time. In it, Nash was a drug addict who was dating the daughter of a wanted San Francisco mafia figure.
According to the opening credits sequence of the first season, Nash was born on 7 December 1955. It also features Nash's and Lisa's divorce document, according to which his full name is Nash Nicholas Bridges and hers is Lisa Crandall Bridges. Lisa was the petitioner of their divorce and Nash was the respondent.