Tallboy

I'm trying to track down the original center wheel caps for my 280. These are the ones with a blue background and the Z and outline in gold/and or white. (Not sure if the gold is due to shelf life, I've seen both). I've included a picture of what I'm looking for as reference. Thanks,...any help would be greatly appreciated.

I have a chastain shadow rear louver for my 78 280z that's missing the hardware. I can't find anything on eBay, or aftermarket hardware. Does anyone know where/if they make any replacement parts. Also, I can't find installation instructions. Any suggestions???

Do you still have the center cap (blue background with Z). If so, I'd be interested.