Convert a Prado

Toyota, and every other carmaker for that matter, won't ever recommend converting its cars to LPG because the modification is done out of its control and to specs it has no knowledge or control over. It has nothing to do with whether the car is suitable to run on LPG. The Prado can be successfully converted to run on LPG. Consult a respected installer and ask for their advice, and check with other Prado owners who have used the same installer to convert their cars.