There are reinforcement plates available that go on the top of the tower to disperse the force of the shock rebounding. Should get those as the struts eventually cause the towers to crack (this is in the case where towers haven't cracked yet which is very unlikely).
Check your rear tail arm bushings, as they wear out and become deformed, they'll cause irregular toe and your tires will start wearing out quickly.
Also check the front cross member for the rear differential, it's most likely to rust and if it does, you'll notice rusted rear sub-frame mounts. Better to get it reinforced.