I recently bought a 63 roadster which had been wrecked in 72 and never put back together. It has a new frame with it which was purchased new in 75. The GM part numbers are Gr. 7003 part #3900200. I need to know what year this frame fits. I don't know which year body mount kits to buy. I have a part book whick goes up to 65 and it is not listed in this book.