Hi Occy,
Your 40 looks like a good basis. I had to do quite a lot of rust repairs to mine in the first years I got it, but that was twenty years ago. I had to learn to weld (still not very good) and, more enjoyable, I learnt to paddle lead and those repairs have lasted really well. I have some panels that need some attention, - left hand front wing and the rear panel corners but that will have to wait until the autumn as it is too hot here to do it in the summer.
Somewhere in the 40 archive on here is a piece I did on building my truck - Evolution of my 40.
Please keep us updated with your progress on the rebuild.
In the years before there were good 40 parts suppliers in Europe I used Spectre quite a lot for original parts and found them very good.
Regards,
Rodger