Thanks JohnR
A little more progress with cutting out rust in preparation to fitting the offside floor.
The floor looks like its going to fit okay when all the surrounding area is repaired.
I needed to fit the heal board repair panel, which meant lining up the rear sub-frame bolts. On the near side mounting only the top hole next to the boot floor had a nut in it, the other one had come away with the rotten bodywork. I made a template by drilling through the sub-frame mounting brackets which were still on the removed sub-frame. To get the angle to fit against the boot floor I had to had to cut a rebate out of the centre of the angle.
A lot of trial fitting of the repair panel and floor, everything eventually lined up nicely. Whilst I was working in that area I cut out some of the rusty areas of the boot floor / seat pan, that would be difficult get to once the floor was fitted.
Edited by robbur, 10 April 2020 - 10:58 AM.