Here's a little more to keep yall coming back.
This pic shows running boards mounted up and rod installed.
You can see how the center section of rod was removed for easy access.
Now you can see the end of the rod welded and the new bolts that where drilled for running boards (marked with arrow) because the old holes are covered by your stiffening tubing.
On to the fender/seat bracket.
I use the original fender brackets just cut off the swivel hole seat hinges on.
This is the seat bracket off stock seat you cut off both sides.
I use 1" tubing to build the rest of the frame.