Identify 51 or 52 rocker panel moulding please

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Ok guys, I need someone?s help with a 51 or 52 Roadmaster. Need just one measurement. I have a left side rocker moulding that is about 83.5 inches long. I know it doesn?t fit a 53-72R. I suspect (because of whom I got it from) that it?s either a ?51 or ?52 off of a Roadmaster Riviera sedan. It?s longer then a Super moulding, this I know. So, if someone could measure their left rocker panel moulding off of their 51 and/or 52 Roadmaster Riviera sedan and post the overall length, tip-to-tip, that hopefully will tell me what year this moulding fits. Thanks much in advance guys! Steve