Cusser
+1y
OK, that comment wasn't overly nice, but is 100% true. Think we're mind readers ???
That stated, if yours is a 1986-1993 B-truck (or the non North American later models), the answer is yes, they are different bushings.
Some are only available from the dealer.
Front of leaf spring Moog K9948 (O’Reilly, Rock) or Mazda 387428330
Rear of leaf spring Mazda UB4028333
Upper rear shackle Mazda UB3928333
4WD may be different.