But the Suns remained competitive most of the 1970s .
Suns almost made Colangelo 's dream come true when Suns reached the Finals in 1976 , losing to the Boston Celtics in six games .
But the Suns remained competitive most of the 1970s , and they almost made Colangelo 's dream come true when they reached the Finals in 1976 , losing to the Boston Celtics in six games .