This is my baby if anyone cares :

Thank You all for so many answers.

Now I understand that are two possible choices:
1. Carburettor feeding the blower
OR
2. Blower pressurising the carburettor

Now I have to think whisch would be the easiest way to get the thing working. The 2nd version probably needs some funky carburettor which is not cheap.
So i think I will try carburettor => blower => intake

4hammer : There no chance i can buy engine You said(money!! ) If the installation should be successful and the the blower will give only a very little affect to the engine, then i am happy already.

EDIT:
About small engines. 2 years ago we had a guest from Finland with fiat or something like that. That car had 1.1l engine , but it beated our nr1 1/4 mile car, Camaro 7.4l .
There was a topic about extremely high turbo pressure of that little car, but I don't know exact numbers.

Ok, thank You. This photo was very explaining. Now I go to look for tha blower. Damn, it's exciting

Hello!

I have a question about supercharging carburettor engine. I would like to try something funny this summer with my old, 1.2l engine car.
Now i have decided i will try to install centrifugal compressor (belt-driven supercharger). I hope I can buy used one for not too much money.
It shouldn't be too complicated to make the charger run with the belt on crankshaft.
But - ´where should the boost be directed to ?
a) to intake manifold ?
b) into the carburettor ?

Thnx!