So little update on my lads race car, in three meetings it fried the clutch but found the gearing to be to long to keep the car singing in vvt range coming out off corners. ( short oval race track)  So bit research mk1 aygo has a diff ratio off 3.55 however the mk2 aygo mmt box has a diff ratio off 4.22.  As technically the mmt box is the same as manual I got hold off a 2020 mk2 mmt box and swapped the casing and clutch release fork to make it a manual box n fitted it to my boys mk1.