You are going to love the vents as well as the digital OAT/DVM. It is just hard to believe that it takes an STC to install them.
It was a real blessing the get the OAT down on the panel where I can read it without craning my neck and tilting my head so that my bi-focals will work to read the OAT.
I am also convinced that the DVM is a MUCH better electrical system indicator than an Amp Meter.