MIG or torch plug weld:
19 The front of the front floor cross member,
20 The rear of the front floor cross member.
After re-assembly, brush on smooth mastic:
21 To the front floor/inner sill joint,
22 To the front floor/bulkhead joint.
Brush on smooth mastic:
23 To the bulkhead/side member centre part joint.
24 To the side member rear joint on the bulkhead
and on the inner sill.