loads of fiats have the c514 gearbox i don't know where we could find details of all the ratios and final drives but in terms of mk1 puntos 55, 60, 75, 85 all have interchangeable box, you could also fit box from classic bravo/a (the ones with fire engines), mk2 punto, uno, grand, cinquecento, seicento, new panda, even old panda (but older old pandas have a different selector mechanism
1A0MFiW.