I'm following this process with interest, greenfield 32. The repair to the bent chassis would have been easier to follow if you'd taken a picture of the chassis in the horizontal plane instead of taking it from above, but your description was clear. My preference with repairs like that is to do a dummy assembly of the relevant bits, including the surroundings, after tack welding but before full welding. That is the way it used to be done with new models in the car industry until three dimensional computer aided drawing reached its current advanced level. The dummy assembly was called a "buck". I've found over the years that it is very frustrating to have to make design changes to fully machined and welded parts - after you've done it two or three times to the same component, it looks like rubbish even when you finally get the design right.
That differential looks considerably better designed than I expected. If it has a lock, though, I don't see it in the pictures. Please post pictures step by step as you assemble the differential - they will be useful in our archives, for other Greenfield owners.
You have shown the clutch axle assembled and re-installed in your second-last picture. Have you adjusted the clutch clearance yet, or was that just a practice assembly? If you have adjusted the clutch, how did you do it?
