I think there is a limit to how many people would convert to lpg,
Also there are probably a lot that would convert but can't due to longer manufacturers warranties .
You also need to trust that your car is going to last long enough to pay back.
Some people are sceptics. (put off by the horror stories).
Think of this if everyone converted to lpg Petrol would then be the bye product & the price of lpg would go through the roof.
Looking forward to seeing the pics of your install, Mark