Fastlane Classic Cars has a picture of a '67 GTX that I think has a perfect stance. It is using 255/60/15 all the way around.

[image]http://www.fastlanecars.com/Public/GetImageBuffer.aspx?VEHICLE_INVENTORY_ID=da965059-7813-4955-b69d-7009e5c6db9e&IMAGE_TYPE=fullSize&IMAGE_ID=76a61f9d-1bc6-4896-8ad0-102af5ed0273[/image]

I have no affiliation with that dealer. I just really like the look of that car and thought that you would find the info helpful.