Saw your post on the cast wheels for your Aero. There are a couple ways you could probably go about that--the ACE Tourer had cast wheels as did the 1100 Sabre. The Spirit wheels will not work because they have a drum brake in the rear. The ACE Tourer had the same swing arm as the Aero. The only difference on the Sabre is the swingarm was shorter from pivot to axle by 1.1 inches but axle widths should be the same. The other alternative is to call Wheel Works in California and they silicone seal spoke wheels so you can run tubeless. Jardine makes billet wheels but you're looking at an insane amount of money for those puppies.