I do know all Harley Davidson keys will open the gas tanks on any HD. Left my keys at home one day needed some gas borrowed the key from another HD rider to open my cover and filled up! Never left them again. Now all HD just have a button to open.
I am a big Discount Tire fan, I have bought all my tires for the last ten years and never had any problems. Course they do have several stores around me. They may even price match if you ask!
They are actually called wheel spacers you can order from Amazon or any of the off road stores. Make sure you get the correct pattern. One tip remove the clip that holds the wheel on to the rotor this will keep the spacer flush with your wheel.