Are you handy on the solder iron? I can point you in the direction of replacing the screen yourself. I've done this quite a few times for myself and a couple mates. (There was a light reflection when photos were taken)
I don't doubt the creators ability as I'm using his HKS ash tray holder, but I do think the fitment looks a bit off. Did he print this out as a one off order?
Are you expecting it to be bolt on? You'll need to do some custom work if using a GTR intercooler. Why don't you use a standard 600 x 300 x 76 intercooler for simplicity?
Take your cluster surround out and investigate the wiring + plug where the OEM switch on the surround sits?
In my GTR that's where my front fog lights are switched on/off.
Looks like you've pulled that harness + plug from the lower left leg position? The OEM harness runs from the top right near the OEM plug...
Full wiring documentation also inside the 32 service manual.