Yes, trans code "M" = Mazda M50D-R1
1988 & Up 4-Cylinder Rangers
1988-1992 2.9L 2WD Rangers
1991-2000 4.0L Ranger
1991 - Up 3.0L Ranger
These have 3 rubber plugs on the topside that crack and leak, low fluid causes trans to melt down.
When doing the clutch it is a good idea to replace these with metal plugs