Have you ever had the valve seals replaced? It's a relatively cheap procedure and might be the cause of your oil consumption. It was a known flaw in that era.
It was burning a quart in 400 miles before I changed the valve seals.
It now uses a quart to 4500 miles. The manufacturer says burning a quart in 800 miles is considered normal in the new ones.
My point is that the engine is as good as new. Certainly not the "cheapest" as was asserted above.