I previously inquired as to the applicability of door hinges for 55-57 Chevy to C1 corvettes and was informed they were identical. After purchasing one, I found that the component that attaches to the door has three holes in an inverted pyramid style where as the C1 hinge has the three holes in a pyramid style. One can remount the "shaft" upside down, but then the flat and beveled sides of the unit are reversed. So, for future reference, they are not interchangeable.