hiii friends i am from chennai...i bought a second hand opel corsa 0f 2006 model.i love my car very much and i love to spend most of

my time in it by going on long drives.presently the cars engine is in very good condition along with the ac by gods grace..but the rising petrol cost is trying to keep my love away from me.so to get rid of these problems  i am thinking of converting it to LPG.
but befoer doing that i need your help.
I  want to know whether it will be helpfull for me or not? will i be in profit after thisdeccision?i love my car a lot and i dont want her to face any probb with lpg.i dont have any idea of the toolkits and the dealers?and i dont want to do any kinds of mistake.
can someone give me some idea of these things so that i can avoid such mistakes.
what kind of  problems i can face after this conversion.?
what will be the mileage?
what will be the cost of conversion?
which is the best dealer from where it can be done.?
in chennai what are the dealers available?
whether domestic lpg can be used for this purpose?
and on...related to this
friends i need to have a complete idea of all these before i take any decisn..!!!plzzzz help!!