Brett,
Incredible work, and great photos! I am a huge fan of what you are doing here. Good job. I have been reading this over the past couple of days and have a couple of questions.
Do you remember how large the holes are in your perfecto tank overflows? Are they standard for their corner overflows, or did you have them made a custom size? How long did Perfecto take to get the tank to your local shop where you ordered it?
When you made your opening for the tank in the wall, is the opening exactly 72 x 24 after the sheetrock, or did you make it smaller to hide the tank frame?
I hope you don't mind, but I am replicating much of what you did. Trying to find someone to order the perfecto tank in my area is not easy!