Speedo Drive Pinion with 3.44 and 13" Wheels

[Fanfaniracing]

As in the Title, i am looking for the right Speedo drive for a Car with 3.44 Final Drive and 13" Wheels.

Can anyone confirm that DAM2904 and 22G2022 should be used in this case?

At the moment the Speedo reads about 20Km/h to much...

Thanks for help

[timmy201]

I used the calculator on Guessworks and the suggested gears have been working fine so far

http://www.guess-works.com/Tech/ratio.htm