That's a lot of work for a meere 400 h.p.
I'd have built a real engine out of that thing that makes atleast 500/550 h.p. or better, and done a little bit more reinforcement work, and made everything else the same.
You can bolt a turbo, or supercharger onto a stock 5.6, and make more than 400h.p. and not have to go through that much trouble or work, leaving everything original intact, in the front frame work.....For less money and time, too..
Don't mean to insult, because it looks fantastic, and it looks as though you've got all of the details taken care of as well. I'd just have done it all for more power than that.