I like the pods on the window bit but not sure about the middles ones, but it could be argued i have crap taste anyway
I agree that its hard to find places for them if you are going the whole hog with guages of absolutely everything.
I popped our boost guage just above the window wiper switch, as it was a small compact housing and guage - i think from demon tweeks. can't find a photo just now.

nicer to have made your own (apart from the blood-loss!)