Hot Rods Need help identifying chevy rocker moldings

Hello it has been a while since I have posted on the H.A.M.B. But I was wondering if someone knew what these rocker moldings go to. I was told when I purchased them that they were for a 54 Chevy. But they don't seem to go to my 54. From just a quicky measurement, they are roughly 75 inches long. The box had a master number of 37451. To me I think they might be all passenger side 1957 Chevy rocker moldings. Any input would help. Thanks

 

http://chevy.oldcarmanualproject.com/1929_57chevyparts/57cmpc0630.htm

shows the part numbers. But I don't think the Master Number is a part number, its not long enough.

no measurements given...sorry.

 

Thank you Squirrel, I appreciate it.

 

Measured a '51. They appear to be '49 - '52.

 

thank you 302gmc im closing in on figuring this out.