What is it worth? V70 Diesel or V70 with LPG ??

Hello, what’s more economical? To buy a V70 2.4T with 200 hp for 9500 and to upgrade to LPG for 2400 euros or to buy a V70 Diesel with 163 hp for 10,000?? Hold good three years with driving performances of 16,000 km per year. Mainly rural road. PS The LPG system would not have paid off after 3 years, because when reselling you will also get good 500 euros more than without LPG system! LPG price with us 55.9 cents, diesel at 104.9. Thanks for Your intel!