Let me see if I can help out just by seeing the pics...
For 1998 Cobra's
1 of 8654 total Cobra's made
1 of 5174 total in Coupes
1 of 709 made in Chrome Yellow (Color Code: BZ)
1 of 3782 made in Black Leather (Interior Code: 4J)
1 of 704 made in Chrome Yellow w/ Black Leather
I was told it was build number 4474