Yep - the rubber has very sightly shrunk with age but I can work with that.
Speaking of floor panels (thanks...)
A few more hours in the garage

And another chunk of floor panel is in place. This one, I confess, mainly came from the HPE I cut up a few years ago

The bit that was rotten and mostly not there was the front bit with the big drain hole ( I know there's a smaller one supposed to be there) so I only needed to fabricate that part. Sods law it's the most complex bit but again I'm happy with the result

I thought about not having the hole but it's original and I have the metal bungs to plug it with so why not. I'll add it to the other side later
Next step fully weld this in and then start on the A pillars.