I've got a couple 'S' 4th gears for sale that would help make a nice econo shorter ratio transaxle.
Flipping your stock 5th ZD to a 3rd gives you a Ka 3rd
Flipping your stock 3 N to 5th gives you a Z ratio
Put in the 4th 'S' ratio
You would end up with a transaxle with A / F / Ka / S / Z
Looking for $200 per S gear set - I've got 2 available
Regards
Andrew M