1972 Datsun 240z with Permacast 45MG Mag Wheels. I know these wheels were very popular for these cars when they came out. I’ve tried three different sets of center caps: 3” were too small, 3.18” were too small, 3.25” were too big. I’ve searched high and low and even had a guy at hardtofindcaps.com look for me. I cannot find any caps that will fit. I just need some chrome, domed, plastic or metal, push-in or push-thru caps that will fit.