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Second - try your local wrecking yard. I was at a local U-Pull-It in Sacramento, CA this weekend looking for a battery tray for my '71 F-350. They had at least a dozen '70s Ford trucks and most still had their engines and manifolds. Most had FE engines but one had a 400M. I didn't check their price board for exhaust manifolds, but they are probably $20 each.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.