Just to add something to all this is, if the tank in your Dart is original keep and use the OEM locking ring that goes onto the tank. The new ones they give you with a new tank are junk and usually bend and twist when mounting the pipe to the tank. they will not lock properly and your tank will have a leak. I went through this when I did my tank, luckily I kept my old tank and used the original twist lock ring and had no leaks. FYI
