Will a 1986 Mazda 5-speed transmission fit in Ford F-150 pickup?
No, a 1986 Mazda 5-speed transmission will absolutely not fit in a Ford F-150. These are completely different makes and models with vastly different drivetrain designs, bolt patterns, and overall dimensions. The bellhousing, input shaft, and output shaft would all be incompatible. You'd need a transmission specifically designed for the year and model of the F-150.