First off - yes they are all the same size. Get 5/16 (I think) fuel line tubing and some O ring clamps. There is debate on here over whether you should go all new line or add to the existing line. My original line was in good shape, so I just added on. Search for the topic on here, there are explicit directions and discussion over some year changes, etc. I believe there is a full parts list as well. There is even pictures to "show" you where they are. You'll need the brass tubing connecters, I forget their exact name, but the post I mentioned will have this listed as well.
Second - 3 of the 4 are really easy to extend, so just do them all. It took me like 30 minutes to do the 3, I haven't done the fourth yet, but plan on it.
Third - like some others on here say, it is cheap insurance.
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