they only convert cars with carb engines.
i've talked to a petron representative two weekends ago at the fort where they had a booth display. its korean technology daw and it will costs you more than P26,000 for the convertion. according to them, their customers are mostly taxi operators. you can still use unleaded fuel when you ran out of LPG. LPG fuel costs P21/liter daw and there are currently 5 petron LPG refilling stations daw in the metro.