Aside from the wheels, exhaust and speed de limiter, CS45 will have the different external decals, GTI embroidered on the headrests, 45 emblem on the steering wheel, black roof, black mirrors and different door cards.
To be honest though, while I own a CS45 and have grown to really like the Scottsdale wheels after some initial hesitancy, I would choose the Estorils over them if the choice was there. I just think the Estorils are a great looking wheel in both black and diamond cut versions.