Engine working principles for 306 LPG conversion

I am intending to buy a 306 for some. If I can realize my intention, I plan to use my vehicle with LPG. There are many friends who have had difficulties after the LPG conversion in the 306s, but the right LPG kit, the right master, and the friends who had no problems as a result of the correct assembly. In this direction, I will have a question like this to you, knowledgeable friends.

I want to know what type of engine (full group, half-row, etc.) all the 306 models have for LPG conversion. I hope I was able to express myself and what I want to ask correctly.

Although I am new to the forum, I learned that our brother, who is called cecoli, is experienced in this regard. I think my brother and other knowledgeable friends will answer my question.