WAA
Non of obove engines are easy fit in rear wheel configuration as you will at least need T50 gear box to mate with them .
For simplicity you can use 5K for power .
a good tuned 5K with Four Barrel carb is over kill for your KP61 and you can install a turbo as well if like.
5K is almost Bolt on in your starlet.
All others not worth to spend on starlet .
Even 7K will require G52 transmission .
Which motor currently you running under your hood .
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