fuel line issue

hey, new dumb guy here... Ive got a 1992 7.3 diesel and I've read several  
places that if you have late 90's diesel,engine your fuel lines will stand up to 
 bio.  So, I'm just going to napa and have them tell me where ever there is  
non-metalic fuel lines from the tank through to the injectors and back, I'll  
just replace with rubber that was manufactured this year or back a year or two 
 off their shelf. that should keep me chugging down the road for a  while