JD- Wasn't it the Stallion Club (not the Mustang Club)? Bob Verga, another extremely charismatic player for Duke, was also known to frequent the Stallion Club.
I was searching Bob Verga stories yesterday. This was from Sports Illustrated.https://vault.si.com/vault/1965/12/0...ours-of-a-star
https://www.njsportsheroes.com/bobvergabk.html