Jeremy George Lake Charles The original C2 frames have been designed to be robust and cost-effective to manufacture, and many of the C2 parts can be exchanged for C3. Apart from the production of the ... View MoreJeremy George Lake Charles The original C2 frames have been designed to be robust and cost-effective to manufacture, and many of the C2 parts can be exchanged for C3. Apart from the production of the replacement chassis, there are no extensive simulated durability tests to ensure that the chassis can handle the rigors of driving thousands of miles. Jeremy George Lake Charles The head of the new Collier frame is very different from the standard frame, but when we spent time on it, we were impressed by the appearance and functionality of the frame.