Help Identify 904 Trans

George Jets said

All I have is a picture. Owner thinks it's a 904, but knows nothing of the condition or what it came out of.

Rebuildable core complete trans.

Click to expand...

appears to be 904 with the clipped edge.

999/998's have a reinforcement ribs on the case where the piston well is-- on the other side from where this photo is taken. you can see them in the pic of your truck trans.

wonder if it's AMC?