Speedometer gear help

[LivewireBlanco]

Ok, so the two common guides I have found have conflicting speedometer gear teeth. I'm running 235/60R14 tires which should measure 25.1 inches tall and I'm going to be switching to 3.23 rear gears. I'm seeing 33 and 34 teeth being the correct size but I don't know which one is right. I can tell you right now that I have 2.76 gears and 28 tooth speedometer gear and it's dead on. Help!

 

[RPMagoo]

-- Mopar Speedometer Gear Selection Guide - MyMopar.com

 

[LivewireBlanco]

-- Mopar Speedometer Gear Selection Guide - MyMopar.com

That doesn't list 3.23 but 3.21 gear. Also, according to that chart my 28 tooth gear should be off but it isn't. Shouldn't there be some sort of calculation based upon the difference in gear and teeth?

 

[LivewireBlanco]

Oops, nevermind. I have a 29 tooth in there. Looks like the chart is good. 34 it is!