Cool 550! It looks to me like a Thunder Ranch with the wide body option. So all those hints about tire and wheel size? Throw them out the window. You've got wider than what a "normal" Spyder can run.
Let us know what wheel/tire sizes are when you get it.
As you know, these are replicas, so you get to do whatever you want. But think hard about interior and upholstery options, as the entire interior gets exposed to the elements. The seats sometimes get stepped on getting in and out. Cloth may not be a good choice. But you'll figure it out once you actually get the car.
Cheers.