I just picked up a set of Prime (never heard of) 17x7 wheels and tires but they are missing the center cap. Got them used cheap with tires, but I would like to get center caps, don't care what they say or look like. I just want to keep dust and dirt out and get a cleaner look. Where can I buy them and how do I figure out what will fit? Are there a bunch of different sizes made?

 

Measured and the center hole is about 2 7/8" ID. Any idea where to buy? I tried ebay motors but a bunch of OEM GM stuff comes up, and I mean a bunch, too much to sift through.