Lots of challenges....
I have seen of lots of builds, where you guys cut of the end of the frame and then weld an U shape on. In Denmark we are not allowed to do just minor modifications on the bikes - can You do that as much as You want to in other countries ?
Well I don't dare cutting of the end. Therefore I will build a seat, that leaves room for the existing frame. More about that later on.
My rear fender is very rusty. Such a fender is hard to find in Europe, but still looking. If I don't succed, I plan to remove the rusty parts of the fender, and do something with fiberglass - and paint it all brown.
If i had been handy, I would have made another kind of fender