Sorry, I was talking about the first tune in the set, not the one at 20:00. Anyway, the dub for the Brand new baby is called Clash of steel. I know the other tune, but can't recall it.
Maybe this will get you closer...
From a review of Tappa Zukie's Escape from hell: The album comprises bonus dubs, all drawn from the same key period of 1976-79. Noteworthy are the super rare Double Struggle, across Gregory Isaac's great 'Love Light' rhythm, which Tappa picked up from Ossie Hibbert at Channel One.
Love Light Burning: Gregory Isaacs
Liberation Struggle: Tappa Zukie
Double Struggle: Musical Intimidators
Jah Gave Us This World: Travellers
Natty Dread At The Controls: U Black
Rasta Foundation: Revolutionaries
Turning Table: U Brown
Or the original rhythm:
Til I Kissed You: Nana McLean
Til I Kissed You Version: The New Establishment
Kissing Version: Big Joe & The New Establishment
Til I Kissed You & Version: Jimmy London
Til I Kiss You & Dub: Prophets (Gladiators)