Are you speaking of the strut rod bushings? I don't know of any others that attach directly to the K-member. Sway bar bushings go into brackets which in turn bolt to the K-member however....
His original question was about sway bar bushings. I would venture to say a lot of the '70 disk brake cars did have a factory front sway bar, but with anything Ma Mopar of the era I would not say they always came with both. But I don't have the factory options book in front of me to say it should have been one way or the other.
Poly sway bar bushings are great as long as they're lubricated, as it will allow the sway bar to distort less and spin (twist) more easily.
