This bio on the group that is up on the net states that the Highlighters first recording was "" in 1969 ..........
Formed at Indianapolis' Crispus Attucks High School in 1963, the original lineup of saxophonist Cliff Palmer, trumpeter Clifford Ratliff, organist Richard "Boola" Ball, bassist Richard Corbin, and drummer James "Porkchop" Edwards drew their initial inspiration from modern jazz, but quickly evolved into an R&B outfit. Managed by Herb Miller, owner of the Indianapolis record store Good Vibrations, the group regularly shared bills with local girl group the Tri-Dells, but just as their career began taking off, military duties forced the Highlighters to go on hiatus in 1966. Upon returning stateside in mid-1968, only Palmer and Ball expressed an interest in reuniting the group, so guitarist James Brantley, bassist James Boone, and drummer Dewayne Garvin (a former military drummer whose uniquely syncopated style proved essential to the band's distinctive approach) were recruited to form a revamped roster. While visiting a local hotel lounge, Brantley chanced upon vocalist James Bell, and with his addition the classic Highlighters lineup was complete.
In the spring of 1969, WTLC DJ Paul Major issued the band's debut single, "Poppin' Popcorn" on his Rojam label
That would mean that they definitely didn't cut "Chittlin Pot" in 1966/67. The Indianapolis outfit weren't playing together in 1966 & 1967 anyway.