1974 Triumph GT6 Mk 3.
After completing the repairs underneath the bodyshell was turned upright and mounted on the shotblasted and repaired chassis to support it. The forward outrigger of the chassis can just be seen.

The sill structure is a single box section on this design and is prone to rust in the usual way. We always remove all the seam edges when cutting off such panels so that the new panel is properly attached with no old bits of rust left behind - a small but vitally important detail for the longer term.