Does anybody know where is best to get a hold of the special tools I'll be needing to conduct a rebuild.

I have a good idea of the one's I'll be needing as I get going but am not sure where to source them.

Also, Am I really insane, or is doing a rebuild your self, marginally achieveable? I am having another lump installed but thought I might as well have a go at repairing the old lump as a second motor, should I need it. Will it be so hard??? I have some past experience and I'm not in any rush? What do you think?

Gary or