As abbot of the Surmang Dutsi-til monastery, Trungpa Rinpoche was one of the primary lineage holders of the Surmang Chod, the most widely used Chod system among the Kagyu. However, and to the best of my knowledge, CTR's personal practice was the Troma Nakmo Chod he'd learned while studying with his main teacher, Sechen Kongtrul.
"All the sublime teachings, so profound--to throw away one and then grab yet another will not bear even a single fruit. Persevere, therefore, in simply one."
--Dudjom Rinpoche, "Nectar for the Hearts of Fortunate Disciples. Song No. 8"