If you guys know what an st200 is, then you probebly know what a ford cougar st200 is. I ask this because I have a set of 17" st200 rims that I run on my 00' svt that still work with the factory lugs. I work at the Discount tire in Livonia, MI, and I think what you could possibly use to cure your prob. is a set of 12x1.50 mag set lugs. I have seen the mondeo rims before, I kind of understand your dilema. If you want to call me at work, I will hook you up. My number is (248) 615-4210. My name is john.