Well, I found the rattle. It was an upper, rear shock mount that was insufficiently torqued. I must have missed it when I retorqued everything after the weight was back on the tires.
It's all good now.
I also installed my "37" inch KO2's on Kansei Roku, 0 offset, 17x8 5" wheels. Lift & tires together produced about 2.5" in front & 2 7/8" in the rear. My KO2's are are about 35.25" loaded.
The ride on road is very similar to stock. No time to get it out on anything more interesting.
Pics as promised.
Stock spare until I can get a new tailgate reinforcement/spare mount. Looks a little hoky to me with the mismatched wheels, so that spare mount will come soon.