Hugh Halliday replaced Bob Henrit for the second and final album in 1967 on Fontana Records. With Ballard and Henrit on board as full-time members, the Unit 4 + 2 sound had gelled, but their cover of Bob Dylan's "You Ain't Goin' Nowhere" was outsold by a cover version by The Byrds. Their last single, "3.30", used electric piano and other orchestration. The song appears on the 1984 compilation album "The 49 Minute Technicolor Dream". "I Will", the B-side, appeared on the 1984 compilation album "The Psychedelic Snarl". "3.30" failed to chart, and with their next album, "Unit 4 + 2", also failing to chart, the group broke up in 1970.