Today I watched both an FSSP and an SSPX Mass to see if both would do the Act of Consecration of the Human Race to the Sacred Heart. Both did.
HOWEVER
While the SSPX recited the prayer in it's entirety, the FSSP omitted,
"Turn Thine Eyes of mercy toward the children of that race, once Thy chosen people. Of old they called down upon themselves the Blood of the Saviour; may It now descend upon them a laver of redemption and of life."