I was under the impression that these two had only fought three times.
However, I stumbled on this fight which took place in France in 1989 on a big Thailand vs Europe event making this the first fight of their quadrilogy . On this show you even saw Cherry Wanich take on two fighters, Ceasar Joel and Joe Prestia in the same night one after the other.
The video does say Sangpheur but it is definitely Changpuek…enjoy.
You can watch another of there fights here.