I don’t like chinese stuff, but GM quit making them years ago and started selling the chinesium stuff themselves (I paid $50 each for ‘GM’ parts ten years ago, got chinesiums in the box from a trusted dealer). So, buy these from Rock Auto or your local parts store. They’ll look great for a while, then they’ll pit and dull, so you’ll swap then again. At least they’re inexpensive. (They do interchange with almost all GM cars from the ‘70s, but good ones are hard to find because they are potmetal. All the repros out there are the same chinesiums, just priced higher.)
RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Easy to use parts catalog.
www.rockauto.com
Patrick
Your linkage is probably fine-it’s real hard stuff. The guides, sliders and such may need attention.