Firstly the old Longitudinal has been cut away along with some small sections of the floor plan where the rot has spread into the floor.

The inner longitudinal is then fitted with the heater pipes and new pipe mounts at each end. The longitudinal end caps are then fitted. In this picture you can also see a tidy repair of the rear suspension torsion bar area.
The floor is repaired first, to make a clean solid edge to weld the inner longitudinal to.
Porsche 356 Longitudinal Replacement.
Next to go on is the outer longitudinal. It is then completely seam welded to complete the Longitudinal and give it its strength..
The rocker covers are then fitted allong with the front and rear wing bottom repair panels.
The internals of the longitudinals are then painted with heat resistant paint to help protect from future rust occuring