No, it'll have the D35 front axle and 13-54 T-case if built after 11/89, but 2.9 trucks were fitted with
the "iMsoshitty" FM146 until the end of production.
As were 2.9 Rangers until the end of 1992.
SOME 2.9 trucks got the M5OD-R1, but unless you bought a 2.3 or 4.0 4x4 truck
you were never...