Hello Steven,
ERA is out of Connecticut and have been in the Cobra Replica business for a very long time. ERA builds a very accurate reporduction in Fiberglass with the original style round tube frame. Their body is a splash off of an (Peter Portante's) original car and they have one of the best reputations in the industry for the quality of their cars and business practices. They sell component vehicles , rollers and turn key cars in several formats.
Take a look at their Website....huge amount of really good info.
http://erareplicas.com/
Good Luck in your decision, have fun.
TR