I recently came across a very interesting set of photographs on the website of Lightscarsaction who are restoring a 401 which illustrates the typical rust problems you might encounter on one of these or a 403 if it has not already been done or if it has not come from a dry climate like South Africa or Australia.
I showed it to Mike who did almost identical repair work on one of my 401's so it was a real case of daja vu , we both felt the photographs are an excellent example of what to look for and the work involved in rectifying the rust damage. I am often asked if i know of companies or individuals able to do this kind of work so finding this website was a real bonus as well and they were pleased for me to publish this link on the forum.
Geoff.
https://lightscarsaction.com/bristol...l-restoration/