Hi, I am a newbie

I joined here because I need your help. I want to become a Fiat owner and I have 3 Fiat options in mind:
Uno 94 1.0 45 bhp 85.000km
Panda 1.1 2006 55 bhp 47.000 km with LPG
Panda 1.2 2005 60 bhp 45.000 km

The thing is I (probably) want to get my car running on LPG to cut the extremely high petrol prices. But also I don't want to shorten the engine's life. I'v been asking around lots of people about these 3 engines, do they support LPG conversion.
The answers are mixed, but the general conclusion was that
1.0 NO to convert to LPG
1.1 NO to convert to LPG
1.2 OK to convert to LPG

Do you have any knowledge or experience which of the 3 engines can safely be converted to LPG, please share it here.

Thanks.

I have Punto 1.2 8V 2004, with Landi Renzo injection LPG system and works fine, 6-8l LPG/100km, I know Puntos and Unos with 1.1/1.0 engines with LPG an they also work fine