i have done lots of khuwari on internet in my time. i own a kia spectra.
and yes, B5 in Australian Mazda Miata was rated at 127hp.
and the kia 1.5BFD engine has been turbo charged in korea many times. some of the bolt on turbo kits have confirmed to produce as much as 180 hp on stock internals.
and please do keep on searching internet. don't completely rely on my knowledge. you will learn a lot.
btw, there used to a kia spectra producing 280 whp in malta. do check that too.
i have no idea about classic's engine and how easy it would be to turbo charge a carby engine.