[KLF] Its Grim Up North

Whats the difference between IGUN 88 and IGUN 91. I also read somewhere that IGUN 91 was taken from The Black Room but due to the lack of knowledge of the true contents of the BR i bet this bollocks. Ive found an mp3 on winmx claiming to be a live performance of America No More in Brighton sometime in 92. its the first ive heard of this so does anyone know anything.