Custom driveshaft. Much beefier and a single piece instead of two piece with a carrier bearing. T5 transmission yoke on one end, Mazda differential flange on the other.
Gas tank mounts. The bed floor will be raised and the tank will be under the bed if I need to access it.
Also had to raise the 4-link crossmember and tunnel the cab so the new single piece driveshaft would clear.
Also, you can see exhaust was completed. Summit block hugger headers, straight 2.25" piping, and Flowmaster original 40 series mufflers. Turned out before rear tire. True duals.