Forks and frame were next.
We started with the mountain bike fork and cut the tubes off.
Then we took 1" (1/8 wall) tubing and turned the end down to the ID of the donor fork. Ignore the chatter marks. Nobody will see it anyway.
Then slipped one into each leg of the fork.
TIG welded the seam and drilled for the bearing carriers.
Bolted the wheel to the fork and all is good.
Decided to redo the bearing mount for the forks. They just didn't look right bolted to the side of the fork so we welded a mounting block to the bottom of the fork instead.