well I took a picture of it but for some reason that is the only pic that will not load on here right. The number is located on top of the front cross member on the left side running parallel with the back side of the upper control arm, centered between the holes for mounting the upper control arm. ok i got a pic of it here. it looks as though it was put there after the frame was assembled because of how it is placed. The instructions that it came with were from 1984 so I was thinking it was an older frame that was not as advanced as the newer kits.