Lug nuts

[ZCarr]

Does anyone make the correct acorn nuts for a 78z with steel wheels?

 

[Z27LS3]

one company comes to mind if a close reproduction is OK, look for Gorilla lugnuts. not the best or worst and large selection.
http://www.gorilla-auto.com/lug-nuts
more - http://www.carid.com/1978-chevy-camaro-lug-nuts-locks/

 

[Baby67]

Go to NAPA online and checkout # BK 7352145 chrome lug nut.
I got these for my wheels and they look good. Plus 4pk only $5.99