Also... don't forget the rear of the motor. Might seem counter-intuitive for a wobble on the front but hear me out...
Dick (my Dad) had the death wobble on Trigger (his Disco 200tdi) where - quite literally - he changed everything on the front, from swivels, to bushes and shockers etc. (even changed the steering box)- but still didn't cure it. This went on for months and months, and he ended up driving at 50mph everywhere (saved loads on juice but was always late
).
He read something online somewhere that mentioned the rear bushes... so he changed one side panhard rod bushes and cured it instantly. Didn't even need to do the other side or the a-frame (although he did anyway).
After he sorted it, he said to me "you might think you've experienced death wobble but until you get it, outside lane of the M25 in Surrey, rush hour, at 75mph, you *really* haven't". Definitely a 'check your pants' moment
EDIT: Might sound weird, but something as trivial as uneven tyre pressures also provokes the death wobble - as we found out, also on Trigger.