904 transmission pan and gasket.

Rock Auto. A500 is deep pan version of 904.
1992 DODGE DAKOTA 3.9L V6 Transmission-Automatic | RockAuto
WIX 58707 filter & rubber gasket $5.15
SKP SK265839 deep pan $14.18
Filter extension from dealer
or just get the whole kit-
RT Offroad Deep Transmission Pan Kit for 80-91 CJs, YJ, XJ, SJ, J-10 w/ A999, A904 Trans. Jeep | RT24001 (vividracing.com) or other places, I've gotten kits for under $40 looking around.