Gearbox Ratios

[mapracing]

Hi All

Is there anyway of finding out what the gear ratio and the diff ratio is in the gearboxes of 1999-2005 yaris 1.3 & 1.0

Both my daughters race in Autograss class 1 in there 1.0 yaris

We are building a 1.3 for another class but would like to set up the best ratio's we can,

Also are the 1L gearbox internals the same as the 1.3 ?

Is there any codes on the boxes that would relate to the setup they are running,

Sorry for the questions but woundered if anyone could help

Thanks Paul

[Devon Aygo]

To work out the info I need to know where they where built , check the chassis numbers

Starting VN = France

Starting JT = Japan

[mapracing]

Thank you for your reply

On the vehicles that i have i will check over the weekend,

On spare gearboxes i have laying around is there a way of telling before removing the internals like the box having a code on?