First of all, the SSPX Dominican community is called the Fraternity of St. Dominic.
The Fraternity of St. Vincent Ferrer has been an Ecclesia Dei community since 1988.
Secondly, in short they don't recognize the the Master General as when they make profession they don't even name him in the Profession. Nor do the Tertiaries (just check their handbook) and I'd safely assume the Nuns.
They follow their own Constitutions, based on the pre-Vatican II Constitutions and customs of the Order.