We offer different rings for the 99 - 04 Sterling axles: http://www.artecindustries.com/ABS_Conversion
The Ford axles have 60 tooth tone rings.
There is a lot of information on setting up the JK Tone rings here: http://www.artecindustries.com/assets/images/Instructions/Artec%20Industries%20ABS%20Selection%20Guidelines.pdf
and here: http://www.artecindustries.com/JK_1_Ton_Swaps_BP