[DanEC]

When you start talking about narrow hip 427 cars you are basically only talking about street roadsters with smooth hoods, no roll bar, no sidepipes and loop bumpers. Competition and S/C cars did not have a narrow hip version. Those pursuing a street roadster version purposely probably would pay a slight premium for one as they were few in number, most believe that with the original Sunburst wheels the narrow hip cars looks better than the half-filled wide hip cars. But in general there is undoubtedly more collector interest in the S/C models and many street roadster models were converted over with some or most of the S/C features over the years.