Post lift vibes

So I installed medium duty dakars and eibach pro lift kit yesterday for about 2" lift all around. Have not got aligned yet. Driving to work today while on the freeway I was getting a random pulsing vibration at about 65 mpg or over. Not constant vibe, it would come and go in quick bursts. Putting it in 4 wheel drive didn't seem to make a difference but again it was kind of hard to tell due to the intermittent nature of this vibe. I've ordered a carrier bearing drop kit, could that be the issue? I'm taking it in for an alignment tonight. It couldn't be an alignment issue could it? I will try 4 high again on the way home to see try to see if it is the needle bearing.

Thanks

 

Forgot to mention, I have on the stock wheels and tires that were problem free pre-lift, so that is not the issue.

 

I'd venture a guess to say it's either the carrier bearing angle or the pinion angle on the rear diff. I've chased those before. If carrier bearing isn't the issue then get some leaf spring shims to adjust the pinion angle.