Doesn't Motive make the 4.30s for Ford? I found this in the FRPP catalog:
ring gears and pinions
www.fordracingparts.com 169
8.8" RING GEAR
AND PINION SETS
PART NUMBER RATIO AXLE
MUSTANG/RANGER/F-150
M-4209-F308* 3.08:1 8.8"
M-4209-F327* 3.27:1 8.8"
M-4209-G355A* 3.55:1 8.8"
M-4209-F373N* 3.73:1 ➁ 8.8"
M-4209-G410A* 4.10:1 8.8"
M-4209-G410M* 4.10:1 8.8"
M-4209-G430M* 4.30:1 8.8"
M-4209-G456* 4.56:1 8.8"
M-4209-F308
shown
NOTES:
➀ These ring and pinions have been developed to increase towing capability of 5.4L Expeditions.
➁ Replaces our popular M-4209-F373. New manufacturing technology utilizing a Face Hob Process which features a single-pass pinion tooth machining
operation compared to a conventional three-pass process for machining. CNC cut and lapped gear teeth. Higher strength and better quality gears are
produced with the Face Hob Process. NOTE: These new gears look a little different, the gear teeth are cut on a different angle and the ring gear has a
bevel on the back of the gear.