For my last shelby, I ordered thru the ford dealer, and had them do the installation. Cringed the whole time watching dumb arses work around my car. This time, just ordered from discount, made an appointment for later this week. Assured me, they have a machine for low profile painted wheels like these, and they stand behind their work with a gaurantee. Its an hour from my house, but saved 250 over the local guy, and I have peace of mind about it.