I tried speedway, but all I could find was the whole front with hair pins and springs and spindles. I have kept my eye out on ebay but haven't seen one lately. I would be interested in yours for the right price.
The axle that you have is new old stock drop axle or just a regular model A axle. I have two regular model A axles. I'm trying to get the front as low as possible for the least amount of money