Atmo and Turbo Dini gearbox differences?

[Hannu]

I was wondering, having two atmo and one turbo Gordini gearboxes, how do they differ?

In particular, are they interchangable, and are the ratios or final drive different?

I guess one difference will be a mounting point for the TDC sensor on the Turbo gearbox?

 

[phildini]

On early Atmo the ratio a bit different on later ones like a X reg ( facelift models ) they used the NG5 same as turbo's