This 7075 aluminum conversion plate will adapt the factory Toyota 3-Bolt Differential Flange (auto and manual) to a 1350 4-Bolt U-Joint Flange. This is the same adapter plate as can be found on our line of pro-series driveshafts for these vehicles. They are precision machined on centers to maintain perfect centerline and will fit onto the centering-pin that is on the factory differential flange. Includes all necessary hardware to mount the adapter.