So in the end it's all about what's available at the shop and your budget.
Hello... Myvi lighter weight and shorter gear ratios. You want surge swap your 1.5 GB with a 1.3 one. Confirm surge like Myvi. But you'll still lose because of the weight difference.The Myvi 1.3 manual mentioned in this thread is faster than my Wira even though I haven't tried a head to head comparison yet. Already can feel the surge of acceleration in 1st and 2nd gear which is more violent than what I felt in Wira.