The next step will be to get the front suspension set up and tracking straight. I need to make longer mounting tabs for the upper A-arms. After that I intend to cut and bend the side rails and install the seat mount rails.
I need to think on the steering wheel mounts, shifter, start, and electrical controls. The rear swing arm mounts will be a couple box tubes with angle flanges to catch the swing arm pivot. The swing arm/ engine mount needs to be made and that brings us to the differential and drive train. Rear wheel hubs, brakes, electrical wiring etc. Keep watching.