Pull the front driveshaft and the go for a ride with hubs out and then hubs in. If the noise is gone then it's likely the driveshaft. If it's only there with hubs in you can isolate the front end minus the driveshaft.
D-shaft is out.....lying the bed waiting to go to the shop.
It will only make the noise with hubs locked and in 4WD. I've tried every combination w/ x-case engaged, hubs locked, and driveshaft in/out. The noise is just like a CV joint. First it was sporadic, with turning making it start the clicking/popping. Then would come and go while driving straight (in 4WD). Now it does it constantly w/ 4WD engaged and hubs locked.
Any other thoughts....I'm at a loss
