The Wrangler was actually derived from the CJ-7 not the CJ-8. The CJ-8 was a spinoff of the CJ-7, because it was a pickup version as was the CJ-10. Also the Wagoneer and Comanche were all based on the 1984 Cherokee, so they should all be on the same level. The last four models from AMC were the Cherokee, Wagoneer, Grand Wagoneer, Wrangler and the J20. I guess I did not make that clear enough in my tree that I sent you. Sorry.
I will send Iowa Eagle the Tree with Descriptions when I get back from U-Pull-It.