The body for my AC Cobra is made out of vinylester. This is a upgraded fiberglass compound according to our kit supplier. The body is one piece except for the door, hood and trunk.
One of the options that I recommend is the body cut outs package. This ensures you that the supplier will do all the major cutting on the body. This option will also save you a ton of body work also.
Here are a few pictures of the body once I removed it from the frame. You will need to remove the body so that you can remove the aluminum panels and begin work on the frame.