[Firebirdjones]

Keep all the steel lines where the factory intended them to be. There is no reason to replace them unless you need a larger size feed line.

If you have a kink or a questionable looking metal line, replace it with another metal line. The short rubber section you speak of are there obviously where the metal lines make a jump from the frame to a component, so the rubber is there to compensate for the flex.

Just for the record, if you like taking the vehicle to the track, NHRA and most other sanctioning bodies don't allow more than 12" of rubber lines in the entire fuel system (for good reason).

If you must replace the whole system and don't want to fool with bending and flaring steel lines, I'd recommend going with a braided flex line. Some very high quality stuff out there now from Russel and others that is very easy to work with and has more of a nylon braid. But using this stuff including all the fittings you'll need could run you more than $300 to plumb a simple fuel line front to back. If you have return lines to plumb the price goes up more obviously.