May be a stupid question but the boost gauge looks good (titled that way since it is a little further down from where you can see without tilting your head)? But I do see what you mean where the other two don't look right.
Hmm... I'll keep an eye out for another single din pod, I really like those for the gauges instead of the pillar pod, I like the subtle look for the gauges
it all depends how the gauges are secured.. mine are held in by a big U shaped thing that gets held to the back of the gauges by 2 nuts, it basically acts as a clamp to tie them down.