some wheels can be custom ordered and you can change backspacing/offset. American Racing torque thrust II's are an example. Also CCWs. There are a lot of wheels out there but not many of the cheap chinese wheels most people run are gonna have a huge lip.
Just curious how much shorter do you think it is? Can you guess? What you want if you're going to be getting wheels is not neccesarily just a deep dish wheel but an offset and backspacing that works for your car.