Range Rover long wheel base, full heavy duty inner sills.
The main sill section is made from 3mm plate (normally 1.5mm) with heavy duty body mounts.
they are supplied in blank, unpainted, component form consisting of body to chassis mounts and seatbelt mount.
Simply cut of the old inner sill then bolt the body mounts to the chassis outriggers, lift the sill plate into position and weld into place.
This system allows the fitment of an inner sill without the necessity of removing the whole outer sill.
Priced per side, not handed.