[Buzz]

Strength is not the issue with the fiberglass "tub" interior liner - it's more a question of authenticity to the original construction methods. The originals used a "birdgage" style subframe assembly to which the inner and exterior panels were attached. It's another one of the nice details on the ERA but to me not so critical a deciding factor as both cars still have glass bodies. Unique uses a one piece body with a solidly built, integrated fiberglass tub and steel cowl hoop forming the cockpit. It is plenty strong and if anything, contributes to additional overall rigidity and stiffness - probably along with a bit of extra weight too. There is no cowl shake on my 18 year old Unique, even after years of abuse on the bumpy, twisty, potholed roads of St. Lucia.