First off, does anybody know if there are any long term side effects to a 2* timing advance on the engine or gas mileage? Any idea how much it costs? I heard that I can get this done at the nissan dealer and just wanted to do a little homework first. Also I really want to get black rims for my truck, 18" preferred and tires, but no lift as of right now. Anybody have any pics or suggestions for me? Thanks again, this site is great!