just making sure, the top plastic part of the gauges is not meant to be remove if it is the clips will break? or is it removable without the clips breaking? I'm thinking of changing the color of it.

I'm pretty sure it is not meant to come off. it sits nicely on top though if you do break it off. Mine hasn't fallen off yet, let alone if you put some double sided tape or a little super glue to it

Any update on this?

It's a nice install you did but the Z interior is so nice I would have put it in another place such as the cup holder or in the storage compartment where you connect your ipod. You actually don't need to see the air/fuel ratio every second therefore it would work well there.

First, I installed an oil pressure gauge, not an A/F gauge.

The whole idea of the oil pressure gauges is to know your oil pressure instantly at any time. Placing it in a cup holder, glove box, or anywhere except your line of site would really negate having it at all. If it suddenly goes to 0, I'll know immediately.

I do agree I'd like it to be more incognito (eg replace the clock or voltage in the three gauge cluster). But, I needed the functionality and peace of mind. So it is what it is.