Have enjoyed the restoration so far but not todays job, removing the 49 year old underseal. Tried every top tip on the internet and every chemical and grinder wheel I had in the garage to no avail. The only thing that would touch it was a heat gun and scraper. Had to work in sections about 3 inch square and slowly try and get it all off. Once you get the majority of it off you can then try your petrol, grinding wheels etc to get it to bare metal. Not quite finished but broke the back of it, obviously didn't bother with the floor pans as these are getting replaced. In the last photo there is the extra bit to the front of the floor. My new floor panels don't come with them and I haven't come across them on parts sites. What do they do?
Damian