What have I gotten myself into?

Great design with the sliding parts. Laser cut I'm guessing. I imagine once the drawings are done, making copies would be a snap.

Took me a minute to remember the UCA does not attach to it. Does it all get welded solid after fit verification?

yes....my welder TIGGs in a jig to minimize movement, he is an artist....I would prefer they all leave TIGGed, but to a select few, I have sold them tacked in order to save them a few $$$
I'm a hot rodder, I get it.... I likewise search for the best cost-effective method... with the most integrity, to accomplish my goals.