Originally Posted by
NutLoose
Err lots of holes in the fuselage for all the specialised kit and lots of external bits etc, and a bare interior with just soundproofing, it would probably cost as much as a new one to put it to a VIP standard, let alone no windows.
Quite often seen on the Interiors Design market - additional holes and even large gaps aren't really an issue - Skin changes if needed.
I sold three ex-police aircraft and the buyer repaired and refurbished - and resold them for a large profit. There is enough of a market out there for used civil business jets.