Tested and working ECU with part number EF8953005225, Bendix part S101140202A with build date of 8743 (Week 43, 1987).
This came from a 1988 Jeep Comanche MJ with 4.0L and automatic transmission and Federal emissions, but will also fit 1987-1990 Jeep Cherokee XJ, Wagoneer XJ (not Grand), and Comanche MJ.
This can be used in manual transmission vehicles from 1987-1990 with the 4.0L engine, however the upshift indicator light will not display (otherwise fully functional).