I can't for the life of me figure out why LPG isn't taking off here.
Two most likely reasons I can come up with are;
1) the government here is too busy worrying about the trivial things and spending all their time in parliament bickering and taking cheap personal shots at each other, to even get around to thinking of the benefits of LPG, and therefore people aren'y really informed about it. It costs a lot to convert and there is no goverment incentives to do it like there used to be. People generally aren't forward thinking enough to do something like this all on their own.
2) Cars here in NZ are very much more disposable than they were, thanks to flood of used japanese ####boxes that crowd our roads. People buy a 5 or 10 year old import, and might only keep it for 4 or 5 years and then it is basically buggered and not economic to keep. With the cost of LPG conversions in the $4-5K range, and with most Jap imports being quite fuel efficient, the payback period can be quite long. It's often not worth it.
Other than that though, there are real benefits, especially for bigger cars. It's cheaper and cleaner than petrol, and better for the engine. What problem do people have?

practically everyone i talk to about it doesn't know why lpg isn't used more. the only place it's used much us europe.

i spend about $2000 USD for everything, including ignition. Payed lots of shipping from the UK.

Back in the 80's NZ's government actually subidised the installation costs for alternative fuel conversions. As result many cars were converted usually to run dual fuels, including Minis and 1200s!! Govt Dept fleets ran hoards of 6 cyl sedans that ran either LPG or CNG. My Dad even had his brand new 84 Honda Accord converted to CNG. As the fuel crisis died off conversions were less popular and slowed to a trickle. There was a clever ignition box produced call a dual curve ignition which allowed different advance setting when switching between petrol and gas. Almost all of the original gas filling equipment has now been pulled out , reconditioned and shipped to Malaysia. It's a shame really because it was the way to go.

i run lpg only
i used the omvl system from italy. IMPCO is ok, they make systems that are more for tractors, but the stuff works on cars.

you can probably find impco stuff cheap

Hi , just few simple tips, stick with IMPCO, search the wreckers in your area and get:
--CA 125 mixer $40.
--J or L model coverter (L is more sesitive for a better cruise mixture) $80-$100
--a second hand tank (check date is less than ten years old) $50- $150.
and dont get a multi valve tank(cost more to get tested)
-- some gas fitters will make up lines for you for about $300
-- a gas lock off, a safety relay and some simple wiring and your away!!!

Ive done two 1200 ute`s like this. and both get great mileage..
All the best

HAs anyone converted there 1200 to Gas or duel fuel? and if so was it it hard and how much did it cost?