1-844-211-6126. Description Warranty Shipping Returns. This is a complete used OEM Automatic Transmission that's guaranteed to fit the 2006 Ford F-150 manufacturer's specifications (). This transmission unit includes a transmission case, valve body, tail shaft and housing, torque converter (automatic only), and all internal lubricated parts. Tim is correct, the M5R1 is a smaller version of the M5R2...or the other way around depending on how you look at it. But the M5R2 bolts to small bolt pattern Fords (300, 302, 351, but most 351's used ZF5 transmissions), the M5R1 bolts to smaller bolt pattern Fords (4 bangers).