97 Chevy K1500 16" wheel identification

[spm4520]

The wheels on my '97 K1500 appear to be stockish.  They are 16", not sure the width.  I'm trying to find replacement center caps and am not having any luck.  My wheels don't have a machined slot in the wheel for inserting a screwdriver to pop the hubcaps.  Also, the window/cutout/see-thru triangle hole in mine appears to be larger than what I'm finding online.  Even the brakes are more visible on mine than the stock pic i found.  Everything I find shows my hubcaps should be almost 8" diam, but the wheels I have will only accept a hubcap that is just under 7" diam.  I can't imagine them being aftermarket, but I can't find what vehicle they are from.  See pics, Any help is appreciated!

 

 

 

 

Edited August 2, 2020 by spm4520