[puppster]

I would venture to say that a car designed around OEM parts would be less likely to have fasteners that are improperly torqued, or that fail due to poor design. Many Cobras are designed around Production suspension components, and I would guess that they are designed with the same mounting and tightening specs. But the purpose of "fiberglass" is to aide areodynamics, and look pretty. In an accident, the fiberglass body is written off. A steel tube chassis however, will unfortunaltly hold up too well in most cases, not absorbing the impact of the crash to protect the occupants. There should be no debate of how these cars perform in a crash (they will not do great). The issue here is that they shouldn't fall apart and crash you into a tree.