The picture in #40 shows the stand off on the axle housing for the line/flex hose junction. You have to shorten the stock line. If a flange is on the bottom of that stand off, you can use a large hose clamp to attach it to the axle housing, no welding. Did mine that way. Sounds like the other end of the car is for the starship Enterprise. Sorry no pictures, car is in winter storage. I agree, you don't need power brakes. If Right Stuff can't resolve their problem, see if they will let you return it and go to Dr Diff. You are probably a little deeper into it than that. You still will have some work to to do.
Sorry, been here in your spot with other things.