Tuffest's "Warboat" wasn't included on the original album, but the LJ Rap cut was . . . as Bob says, the rhythm may have been recorded in 1978, but the other cuts clearly date from later. Ringo may have been around in the late 70s, but his cut is clearly in "ragga" style, definately mid 80s at the earliest. I think Mikey Jarrett and Reverand Badoo were primarily 80's artists . . . so probably very few of the album's cuts were actually recorded close to when the rhythm was recorded.
What about the half that's never been told?