46RE transmission without speed sensor

Its not an RH, its an RE. Is your Dur 2x or 4x? The PCM gets a pulse signal from either rear diff pick up or it gets the same pulse signal from trans mounted vss. Only difference is rear diff is signal and return while trans mounted is 5v, signal and sensor ground. The Ramcharger inline speedo cable type may be a better choice for you unless you are swapping out 4x4 tail shaft and housing to 2wd. Even the Furd 8.8 has one that works.