But the Stations of the Cross is one that remained plenary after Montini's (putative) changes, and so those will have their effect either way. I tend to make the Stations for the intention of converting members of my family, and for other sinners ... but also meet the other conditions (Communion, Confession, these prayers for the intentions of the Holy Father) and then offer the indulgences themselves to Our Lady to do with as she pleases.
Where do you get your information. The Stations of the Cross are the one exception to the rules of gaining a plenary indulgence. Confession and communion are not required.... in fact you gain an additional plenary indulgence if you do receive.
From the 1957 Raccolta:
"A plenary indulgence as often as they perform the same: ANOTHER plenary indulgence if they receive Holy Communion on the same day, or even within a month after having made the Stations ten times."
No edition of the Raccolta ever stated they were a requirement. A state of grace though not mentioned is required that's why the stations start with the Act of Contrition.
If confession and communion were required how could people at sea or in prison or the seriously ill be eligible to gain the same indulgences.