Was bad on my 86' and took care of the majority of shaking. Changing the tires from generals to mich gave me a better ride but did not stop the vibration. Lastly, there's a very long thread on here where someone spent a lot of money on a lot of different repairs only to find out after thousands of $$ it was the LOWER CTRL ARM BUSHINGS. I have a similar vibration. The DSL and bearing corrected a lot of it. Tis week I am also putting on the lwer ctrl arm busings and expect it to be solved. Good LUck!!