I replaced all mine in Dec. 07. I had the motor out for a clutch job. I used fuel injection hose from a local parts house, I did not buy the fabricated fuel lines. the factory crimps can be easily removed and the metal line itself can be reused with no problem. I also used clamps that are for "fuel injection" not the regular hose clamps.
You should replace the all .........is the answer to your question.