Q: Is a used 4R70W transmission a good option for a Ford F-150?Yes — a properly dyno-tested unit gives you OEM-level performance at a fraction of the cost of a brand-new replacement. Q: What mileage is acceptable on a used 4R70W?A documented donor vehicle under roughly 100,000 miles is generally considered a safe range. Q: Does the 4R70W fit every F150 model year?It's used in Ford F-150...