Congrats on the new ride. That is sweet. You will love the power upgrade from the 328. I test drove a 330ci with PSS9s before I bought the 540i. The PSS9s are incredible if you are an enthusiastic driver that enjoys the track and/or windy roads. If you don't do either, it is completely unncessary to have so much adjustability in your suspension. You would be better off with different sway bars and lowering springs to help handling and give you a more aggresive look.