Speedo gears

[Jamesvette]

I am planning to change the gears in my Dana 36 from the stock 3.07 to 3.54. The trans in the 4+3 Doug Nash. Can anyone advise which speedo drive gears I will need

 

[vetteoz]

Need grey 15 tooth speedo drive gear on the output shaft ; keep your green ( 3.07 ) 42 tooth driven gear