Need to find a part for my 2000 black camaro

Hey!
I have lost one of the caps off of my lug nuts on my 2000 black camaro. I have aluminum wheels so the caps are the ones that are factory stock not chrome. they feel like plastic. The cap is gray. Anyone know where I can find one cap to replace the one that fell off? Thanks. Also, I had a new dashboard put in and now right above my speedometer the one area of the dash is lifting up. I called the guy who installed and he won't help me. I think it's clamped down with clips or velcroe. I'm not sure. Can anyone help me with how to find a way to fix that too? Thanks
Shelly

not sure on the dashboard deal. Sounds like you got a raw deal but try posting in the "parts wanted" section for the lugnut covers or you can check out a local dealer. I don't think they're very expensive.