Steering stabilizers have been around for a long time, but they are no substitute for having the front end and the rear suspension as well in good condition. I drove back in the 50's when these vehicles were still in every day use. Roads were a lot rougher than they are now. In the summer time, I drove with one arm hanging out he window and the heel of my right hand on the steering wheel. If I had a girl with me, I had my right arm around the girl and my left hand on the wheel. I hit lots of pot holes and the term "death wobble" wasn't in the dictionary. But we kept our front and rear suspension maintained. Loose rear suspension contributes a lot. Worn out air ride on modern trucks does the same thing. I agree with fixing the suspension first, and then learning how to drive these old things. People who grew up with modern vehicles overcompensate when they hit a pot hole just like over steering when they run off the road. If you just put a light touch on the steering wheel, the king pin inclination will keep you going straight. If you do this and still have the urge to buy a steering stabilizer, they won't hurt anything. But don't expect miracles.
