So, my nylon fuel lines have started leaking. I was just finished resealing the timing cover and first run up looking for leaks I found a fuel leak. I would imagine my moving things around managed to flex the old nylon too much and it cracked. I was thinking of just pealing the fitting at each end and replacing the lines with high quality hose from the parts store. Do I need to replace the thermal wrap? I think I do, but what with?

 

Where?
On fuel rail, or going down beside the engine.
If you use parts store fuel line, make sure you get "fuel injection hose" and high pressure clamps. Not the crappy worm drive clamps.
I don't see why you couldn't use it for longer distances. If the factory heat shield can be reused, go for it. Extra protection never hurts.