Sweet Jesus Redhook,
You've just named the three most expensive components of a 12E. Purchased new, if you could purchase them new, they are worth more than a flying 12E. There are some components for sale on Barnstormers.com. Otherwise, try CopterDr on this site for ideas and some used components. Edy Johnson 559 359-2710 and North Delta Helicopters at 604 946-0404. Blades, -03 or -04 are out of production and very hard to find at any price. Hubs and forks are available from Hiller if you're paitent and have money to burn.
Are you working on a project?