Should really be called STAX Brass and Tele, since there is more brass.
Mapping
Bass C1 - G3 - midi 0-31
Drums, follow GM mapping, with these changes/extras, at midi 32-59
32 snare rimshot
33 pedal closed hat
34 snare edge
58 - empty
Brass section C2 - B4 - midi 60-96
Cleanish tele (tele through 70’s Vox emulator) C#1 - G3, midi 97-127