97 ZJ vibration on braking

All of a sudden my 97 ZJ 5.2 Up-Country with not quite 90K miles has
started shaking during braking at around 50 MPH.  At 65 no vibration, at
30 no vibration, but if I hit the brakes at 65 it goes through a period
of vibration around 50 mph (that number's not exact) and then stops
vibrating as it slows.  Does not seem to be specific to or alleviated by
turning.

It's had the brake rotor recall.  Had new pads and rear rotors a year
ago and no problem since until just now.  Front CV joints need
replacement (boots gone on both) but that's been so for some time
(noticed it when I changed the pads but haven't had a chance to do it
yet).  Put new shocks in a week ago and the vibration seems to have
started then.  I have a new steering damper in the box in the
garage--was going to change it with the shocks but life intervened.

Seems to me that the procedure to follow is replace the steering damper,
since the part is paid for already, then the CV joints since they need
it anyway, and then go on from there.

That said, do the symptoms described suggest any specific problem to
anybody?  Or something else I should do on general principle while
replacing the steering damper and CV joints?

Thanks.