Just purchased a '06 FX35 RWD, looks like handsfree/touring package. Came with 18" wheels, what are the pros and cons of 18" vs 20" wheels? If I do put 20's on it will they do anything to the alignment and speedometer? Also thinking about the Stillen STB, thoughts? It's sapphire blue with black interior, love the look. Any other minor mods I should think about? I'm in Orange County Ca working, hopefully this whole year, but live in upstate NY and will be driving her back sometime, will the RWD do ok in the snow? Any advise would be greatly appreciated, thanks in advance.