Got the wheel situation taken care of and finally fitted the last piece on it. A kickstand!
The 6 inch rear wheel is a mix of parts from what I had bought and what I had. I took the hub from the six inch wheel and chain carrier cut it down then carefully removed the wheel mount from the hub by grinding the weld holding it together.
Then I had to make the hole in the wheel mount larger. I slowly worked on it removing a little at a time and keeping the circle centered. Then the old 4 inch wheel has the sprocket made onto it. As well as half the wheel. So I removed the one wheel half and slowly ground down the weld holding it on.
Then the fun part making the spacing correct and the wheel mount true on the hub and welding it on. I got it done it’s not 100% but it’s not going to break and it looks like it came that way.