Winning both the 1976 and 1977 Regular Season and Playoff Championships, the Millionaires twice made it into the Centennial Cup playdowns.
In 1976, the Millionaires were dropped in five games by the Charlottetown Colonels of the Island Junior Hockey League.
A year later, the Millionaires first played the Corner Brook Jr. Royals of the Newfoundland Junior A Hockey League sweeping them in the process.
In an anticlimactic ending to the league, the Jets took on the Metro Valley Junior Hockey League's first ever Junior A champion in 1978, the Cole Harbour Colts from Nova Scotia's mainland and were defeated by them.
Even now, the Strait Pirates of Port Hawkesbury still exist and the Cape Breton Canadians who were formed as the Sydney Millionaires in the 1970s are still playing in the NSJHL.