David, I congratulate you on your M112 setup. I remember when my Richwood manifold arrived, and I set my M112 on it for the first time, and said "Holy Sh*t, there's no way!" I started shopping for a twinscrew the next day.
You've persevered with this, and found a solution that appears it'll work fine, and looks good too. I don't know what all the extra machining has cost to reduce the size and the overhang of that M112, but it couldn't have been cheap.
I also don't know how you're going to get your hood closed with this setup, but as you do with everything else, I know you'll find a way.
Well done M8, this is what hotrodding is all about.
One recommendation for you, and anyone else who has a Richwood manifold; my engine builder buddy Dennis felt pretty strongly that those sharply machined edges of the manifold ought to be cleaned up a bit, and a little transition radius put on them. I told him I really wasn't interested in wringing the last bit of HP out of this, but he insisted that it ought to be done to get this setup to flow really well, so there it is, it's done. Sorry, no pics.
BTW, I still have my "brand new" M112 in the garage if someone else wants to do one like David's.