62-65 early model speedometer gear Chart?

I am looking all over for a chart on what our gears match up to, there are all kinds of charts for 66 and later models. Does anyone have a chart? I could not find anything in the archives. It may make a good sticky for the forum if anyone has one. I have a 3.55 gear and 26.5 tall tires. My speedometer is currently 20 m.p.h too fast.
any help is appreciated.
Highwaystar