You have not given us enough information to even work with. What is the offset and backspace on the wheels and how far are they from the fender?

As Cody suggests, I would go with a hub centric high quality spacer, I had the Eibach pros on my car and was happy with them, but as far as size, you are the only one who has seen it and knows how far out it needs to go. We are happy to help, but we need info