Either that, or crawl through a boneyard with a multimeter looking for them. They're not cheap.
You might also check with local transmission shops to see if they have any lying about - but I'd not expect great results with that. It remains a possibility.
You can always check with Jeep AND Toyota, since the AW4 is a Toyota box. It was used in pickup, RWD Van, Celica, and Supra.
5-90