Managed to make a bit of progress this long weekend.
Finished all the welding (capping off open ends, rad mounts, Roll bar stay mounts, brake tabs etc) and painted with etch primer on the bare metal, followed by undercoat. Whilst that was drying I cut out the floor panel from a template I had made. Here it is offered up to the primered chassis:
Then I applied the top coat, waited for that to dry and started fitting the floor - 164 4mm holes drilled, floor removed, sikaflex applied, floor replaced and rivets installed: