Parts sourced via @beno 4 Runner arms get you a better contact patch with modern wipers. The bushing on the wiper motor on my 1984 was a goner. My wipers slapped time on the cowl and went about 4" off the windshield. OEM Linkage is still available. I removed the entire linkage with the motor. Slides out as one unit on the passenger side. The arm does not come with the brass bushing or the snap ring. I reused mine but I can see this being an issue. A new snap ring would have been best. It's tight. The blood sums it up for me. Clean install. I think the linkage was just under $300 and I can't remember how much the wipers and new arms were.