My center caps were pretty shabby, cracked and were turning gray.
No center emblem either:




I scored a NOS set of 4 for a measly $32 bucks off flea bay



I wanted a set of Z-28 emblems for the centers on the caps.
GM NOS Z-28 emblems were $59 bucks or so.

So I bought these china knockoff bowtie emblems.
There were less than $8 bucks shipped again from fleabay


There were sets of china knockoff Z-28 emblems but they were 2.5 mm
and prob. would need a trim so they would fit in the indentation.
cost around $12 bucks.






They fit the caps indentation perfectly.
The cap measured 2.2 mm

 

Great find and nice price.