how about a pic of the back of it, and the shaft. looks like a d28 to me but cant really tell. also there are build numbers to the right of the diff going up and down. they start with 610xxxxx, then match with this
taken from library)
610171 FORD 28 FRONT 1983-84 RANGER
610223 FORD 28 FRONT 1984 1/2-85 RANGER/BRONCO II
610249 FORD 28 FRONT 1986-87 RANGER/BRONCO II
610298 FORD 28 FRONT 1987 1/2 RANGER/BRONCO II
610300 FORD 35 FRONT 1990 RANGER/BRONCO II
610307 FORD 28 FRONT 1988-89 RANGER/BRONCO II
610365 FORD 35 FRONT 1990 1/2-92 1/2 RANGER/BRONCO II
610366 FORD 35 FRONT 1990 1/2-92 1/2 EXPLORER
610410 FORD 35 FRONT 1993-94 1/2 EXPLORER ABS
610418 FORD 28 FRONT 1993-94 1/2 RANGER (Hybrid axle)
610419 FORD 35 FRONT 1993-94 1/2 RANGER
610436 FORD 35 FRONT 1992 1/2 RANGER
610437 FORD 35 FRONT 1992 1/2 EXPLORER
610476 FORD 35 FRONT 1995 EXPLORER - DISCONNECT (SLA IFS)
610483 FORD 35 FRONT 1995-97 1/2 RANGER ABS
610484 FORD 28 FRONT 1995-97 1/2 RANGER ABS (Hybrid axle)
610556 FORD 35 FRONT 1998 EXPLORER - NON DISCONNECT (SLA IFS)
610581 FORD 35 FRONT 1995-96 EXPLORER - DISCONNECT (SLA IFS)
610582 FORD 35 FRONT 1995-96 EXPLORER - DISCONNECT (SLA IFS)
610585 FORD 35 FRONT 1996 EXPLORER - NON DISCONNECT (SLA IFS)
610586 FORD 35 FRONT 1996 EXPLORER - NON DISCONNECT (SLA IFS)
610642 FORD 35 FRONT 1998-98 1/2 EXPLORER - NON-DISCONNECT (SLA IFS)
610643 FORD 35 FRONT 1998-98 1/2 EXPLORER - NON-DISCONNECT (SLA IFS)
610644 FORD 35 FRONT 1997 1/2 EXPLORER - NON-DISCONNECT (SLA IFS)
610645 FORD 35 FRONT 1998-98 1/2 EXPLORER - NON-DISCONNECT (SLA IFS)
610652 FORD 35 FRONT 1997-97 1/2 RANGER
610653 FORD 28 FRONT 1997 RANGER NON ABS (Hybrid Axle)
610774 FORD 35 FRONT 1999 EXPLORER - NON-DISCONNECT (SLA IFS)
From the above, we can see BOM #s:
610418
610484
610653
Are the Dana 35 "hybrid" axles with the Dana 28 guts.
hope this helps u out