Diamonds are good wheels, ran those on my race rx7. They are supposed to be track only, don't have a dot stamp. There's only a couple places that are thought of as being good to widen wheels. One is in cali. the other is in wis. or mich. Just do a google search on widening wheels, thats how I found them. Most of the links are going to be to custom car forums, but it seems like good info.