I wanted to ' revidieren' my vnx1t motor, then I saw it has the same gearing as the px80 is this normal?

I can see that before i bought this motor it has been open before because everything looks in perfect shape inside.

Cilinder was not a 125cc anymore but a 150 from unknown mark.

Can anyone tell me if the gearing could be the same?

If it isn't which you would put if you know that the specs are going to be a 24mm si carb with 177DR and sip road.

Greetings from Belgien.

Nobody knows if it could be that the first px125 serie( vnx1t) has the same gearing ratio as the px80.