In the interests of my sanity (I don't think I will be renovating another Honda in a hurry) I have made a small start on the Model A sheet metal repairs, by welding up the battery strap.
Apart from the nuts, it's all there. It had corroded or fatigued (it looks very thin at one end and needed a little attention from my splendid TIG set:
Originally, the ends were double thickness and show a gas weld so I wasn't to obsessive about removing all the evidence of a new weld from the side of the strap that was originally welded. Apart from the weld repair, all I have done is to free off the nuts and wire brush the threads: