Here's a real good write-up by FastSUV, who's a member here, on replacing the rear seals/bearing on a 44a axle. I'd go with the Timken bearings in the thread and the 35c & 44a axles use the same parts.
You best also check to see if your ebrake pads are soaked with gear oil and may be a good time to replace them anyhow.
Here's a write-up I did on the ebrake cam/lever replacement and you may be able to salvage them while using them over.
Lastly if you don't know what exactly came on your ZJ from the factory fill out the below Jeep form and write, "Request for build sheet" in the first box. Within 2-3 days they should email you your build sheet.
Welcome to the forum and good luck!