I am confused about the parts of a 55 chevy bel air, The front end is the part were the engine goes in and i know it is romoveable so are the fender, side panels etc. but what about the back part of it were the trunck and wings stick out on the rear end???? IS it a whole part of the car or does it come of like the front end? Do they sell rear end replacement like they do with the front ends????????

The grey part( pretty much the whole back part of a 55 bel air) of the car is the one i dont know what it's car and what to do if the car does not have it? IT is just chassis and the front end its miss the back part and the seat etc.