Nice wagon! Replace those accumulators. My wagon sagged overnight so a few weeks ago I rebuilt the valve body and adjusted the height. After that, it rode like a basketball. We looked like bobble head dolls going down the highway. I put new accumulators and sway bar connectors (the plastic z-shaped pieces) and releveled last weekend, and I can't believe the difference in the ride. I converted it with a Greasecar kit last February and so far so good.

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Brad
1981 300TD - daily driver
1963 Chevy II
2001 F-250 7.3 Power Stroke