Snidely,
Welcome to the group, family, cult, asylum.....
The effort is great and I like the bar graphs for speed and rev. I am hoping that the tank selector is behind the steering wheel. The 5500 on a 455 is a lot unless it has been balanced as a assembly. I would have added vacuum and lube oil temperature in the stack. I happen to like analog instrument for most service because most often the number is unimportant, but the change is and I used to be able to log the reading of a 100 psi gauge to within a single pound from the other side of an engine room. When flying, one does occasional visual sweeps of the panel to see if any thing has changed, one does not have time to look at numbers so you record in your brain the position of the instrument pointers. I hope you built a feature into the works so limits or rate of change will raise an alarm. But, that is me and I have been taking care of other peoples engines for a very long time so I have so strange habits that serve me well.
The fact that you have readouts for the rear airspring pressures is interesting, I hope you realize that what you see there is backwards in that if the pressure decreases, the very last thing you want to do is increase it to where it was. That pressure will decrease with load changes gets reduced (like fuel use in my coach) or increase when someone walks all the way to the rear while underway. My coach is lighter than most and the 300lbs of fuel that I have in the tanks can change things.
We usually show real names here for two very good reasons:
One is that it makes it much less awkward when we meet in person. (Oh, so you are Xyz?)
The other is that we like to know who we are helping, this is more rewarding.
If you go to the top right of the page and click on the S in a meatball, one of the things you will get access to says "Signature". If in that box you put a name you like to be called and will be recognized along with a short about the coach (like 76 ELeganza with a glass cockpit.....) any person offering advice will have a good starting point, and lastly a geographic reference because you probably have some wonderful old friends that you need to meet that are in striking range right now.
I really normally include a real welcome at this point, but as I only have the name of the villain character from Rocky the Flying Squirrel, I will forgo that at this time.
Matt