Ford Falcon 2000 Problems

You could, but it’s a lot of work and I wouldn’t recommend it. If you really want to do it the best way might be to buy a wrecked petrol-engined Falcon and swap over the engine and fuel system. You could also extend your range by fitting a second LPG tank.

It's probably a leaking seal, but you have to first determine where the leak is coming from. The best course is to locate the source of the leak and replace it, but there are additives available that claim to recondition seals and stop leaks. You should be able to find them at your local automotive store.

The only thing you should be concerned about is the affect it might have on the speedo readings. Check the overall diameter of the 16-inch wheels and tyres and compare them to the diameter of the 25-inch wheel and tyre combination. If they're close to the same I don't believe you would have any trouble fitting them to the 2000 AU.

You've probably got a number of problems. The rattling noise and the vibration could be the exhaust hitting part of the body; the overheating could be a radiator issue.

The AU 2 was mostly a cosmetic makeover of the AU to make it a little more attractive, there were some changes to equipment levels etc., but there were no significant changes to the mainstream six-cylinder and V8. The AU 2 saw the introduction of the dedicated LPG six and a new 200 kW 5.0-litre V8 for the XR8. There’s not reason you couldn’t swap the engines.

THE Jackaroo should be OK, but I'd look at a Pajero, which I think would be a better choice. As for the Falcon, the cars you are looking at have to be seen in isolation because of their age and kilometres. The Falcons are generally tough, but are known to have problems with radiators and head gaskets. At that number of kilometres I'd have the auto transmission carefully checked, particularly if you intend to tow.