Chassis — pressed-steel backbone, sill boxes and rear engine bay corrosion
The Mangusta chassis is a pressed-steel backbone with outrigger sections carrying the sills and the rear engine cradle. Corrosion in the backbone spine, sill box sections, floor pans, front footwells and the rear engine-bay ledges is the standing structural failure mode on any Mangusta not restored to bare metal. Lift the carpets, inspect the sill boxes internally with a boroscope and paint-depth-gauge every panel; any car represented as concours-restored must carry photographic body-off restoration documentation from a marque specialist.

