Apologies for my late reply,
I've been running a Lexus RX300, 04 Plate on LPG since 2008. 21k miles when I converted it at a cost of £1500** Prin LPG system + flash lube , (80ltrs under carriage LPG tank), Its been very economical running this car. and its been trouble free, My view is if you want to convert any car make sure its at least 4 years old (newish) so you can keep it for long to recoupe the cost of conversion. Converting a 13 years old car to LPG is waste of time and money...
I understand the case of accident and insurance have to pay you off, in that the investment is lost............ but hmmmmmmmmmm everything come with its own risk
Its been a very good experience for me and I’m planning to do a new conversion soon on a 2014 Rx 450h using the same company medway dual fuel
Their service was outstanding and Ill recommend them
A full LPG tank give me 350 miles on motorwayand about 280 miles urban