The pinion has been lightened and it is standard 28 spline on the pinion. Alaska and Hawaii usually cost about double. International is even more yet.
Motive 9" Ford 5.29 Lightened & Backcut Ring & Pinion NASCAR U20
Motive 9" FORD 4.86 Polished & Lightened Ring & Pinion NASCAR IMCA UMP U17
Motive 9" Ford 5.67 Polished Ring & Pinion NASCAR IMCA Stock Car Wissota U23
Motive 9" Ford 6.20 Ring & Pinion IMCA UMP WISSOTA NASCAR U24
Motive 9" Ford 4.78 Polished & Back Cut Ring & Pinion IMCA Ratrod Streetrod U16
Motive 9" Ford 5.14 REM Polished & CNC Lightened Ring & Pinion NASCAR U19
