Note that the Grand Cherokee, ZJ or WJ, "Dana 44" has an aluminum center section. Yes, that's right, it is not a true Dana 44, and the gears are not true Dana 44 gears, so there is practically no aftermarket for these Dana 44 imposters! Just a warning to anyone who happens upon this thread. If you are wandering the salvage yard or a parking lot and happen across a ZJ or WJ with a V8 engine, have a look at the imposter D44 underneath (or possibly a Chrysler 8.25). If you happen to see one with a 4.0 I-6, it will most likely have a c-clip Dana 35 with disk brakes.
Otherwise, on the subject of the 2.35 gears from an AMC Model 15 (Eagle) rear axle (which became the Dana 35), they should fit in a Jeep Dana 35 housings, although I have yet to try that swap, and no desire to, either. It is true that the pre '90 Dana 35 is non c-clip, and aslo true that the XJ Dana 35 (or even the rare XJ D44) have the spring perches already in the correct place for swapping into an Eagle. The catch is the shock mounting bracket on one side, I can't recall which side, is on the wrong side of the axle for a direct swap, and must be carefully ground, torched, or death-wheeled off and re-welded to the other side of the housing, front to back, to match the shock absorber setup of an Eagle. Also note that, its true, after '90 the D35 has c-clip axle retention.
Finally, the 2.35 gears from a Model 15 should fit in a Dana 35 housing, especially if you use the carrier from the Model 15, which is designed to carry the 2.35 ring gear in the proper place inside the housing.