benchseat is right, there isn't any point in trying to convert a car from LH to RH drive, there are loads of good RH drive cars out there, make it easier for your self and just buy one that is RH drive from the factory.
If you want to keep the car you have then LH drive isn't a real problem, my four is LH drive and my wifes Twingo is LH too, we're used to it, though she does really want to take the Twingo to France in the summer so she can drive it on the correct side of the road for once.