EFI to carb big bore

Callumrayb · Derestricted Danger Joined: 06 Jun 2018 Karma :

So as the title says I am trying to convert a later EFI engine (157FMI) From a superlight to the older carb version. Are the electrical connections the same? The only thing I can see that's different is the way the Injector goes into the engine.
The later engine is black and I have a black big bore kit that I have installed (190cc) and i have the jets for the carb which I have no idea how to setup. Would it be easier to spraypaint the big bore silver and fit it on my current older and silver engine? Or should I just replace the engine? Really confused and can't make up my mind.

Spray big bore silver and use in current engine

Or

Use efi engine in my current carb bike

For reference it's a keeway superlight.

Any advice from mechanically sound people would be appreciated!
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Hiiii