I have seen it done on a tight budget
A good friend of mine did it by looking at a ORU kit
It didn't turn out well...don't get me wrong it worked but he is now in the process of cutting it out and redoing it.
PLUS the steering mods cost money to do right...and I believe(as others on the board) that steering MUST be done right.
I love to watch good fab work and new ideas but do it safe for you and everybody else on the HWY.
Daniel used 3x3 tubing and made his hangers out of .25 steel
He worked in a fab shop with a press brake and made about 20 brackets untill he got it right. Steel was free.
Good luck