1996 Ford Ranger Shake at 40

I have a 1996 ranger ext. cab. I just started noticing a bad shake at 40 mph and high. I also have a winning sound that is more noticeable when cold and while costing at slow speed and under braking. I recently replace front wheel bearings, new tires all tires were balanced and still have weights on them so I don't think they are out of balance. I was wondering if it might be cv joints, and also how do I tell which one is bad I have three on my drive shaft.
Any help would be appreciated.

Thanks