Original sentence: A long wheel base version, lengthened by , was also made.Construction was still split into chassis and pressed steel and aluminium coachwork (unibody construction did not arrive until the Silver Shadow)
Edited sentence: (Unibody construction did feature on Rolls Royce cars until the 1965 launch of Silver Shadow).A long wheel base version, lengthened by , was also made available in September 1957, outwardly very similar to the existing car, but offering improved leg space for rear seat passengers.Construction retained the traditional split between chassis and body, which facilitated the provision of special bodied versions though in practice the overwhelming majority of cars were delivered with the standard steel body shell, produced by Pressed Steel, and combined with light weight aluminium based alloy usedfor the doors, bonnet/hood and boot/trunk lid