Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
That could easily cost up to £150, maybe more. All the fins need chopping out from the top downwards, so you can get to where you need to be, and you would also need a donor barrel to cut some donor parts out to weld in. Why do you need a replacent George.
What bike is it? I have 500 and 550 blocks about at various sizes