After 209000 miles the main bearings on my 1987 F-150 are refusing to hold oil pressure. They're worn to the copper, and the cam doesn't look much better from the view underneath. The engine is rated a 185 hp (1–5–4–2–6–3–7-8 firing order), uses a large, two-piece, cast aluminum manifold with a speed-density based EFI system. From what I gather, the mass-air type measuring system was used on all 302's starting in 1989, using the same manifold. I'd like to swap in a used, hopefully better, engine with as little pain, and money as possible. I'd like to get a complete vehicle at or as close to salvage price as humanly possible. Any advice on car/truck/year to engine candidates would be appreciated.