you can replace them, if that's what you want to do.
you just have to make sure you get FUEL line.
there is not a clear hose that's rated for fuel. it will be blue or yellowy orangeish.
if you have throttle bodies, I assume its efi. if its efi, you need fuel line rated for the pressure. the blue or yellowy orangish are not going to be rated for what you need. they will work, but will swell much faster because there not reinforced.
a fuel line that's swollen is much more prone to bursting.
you can go to your local auto parts store, get some efi fuel line for a car, its rated for 300 psi which is way more than you need, reinforced rubber, and available by the foot. you should be able to replace all your fuel lines on your sled for $10.
it should also be noted, that line rated for fuel does not mean its rated for oil. you will want to check on that if your considering replacing your fuel line and your oil line..
remove the fuel line from the sled, and either cut a 1" section off and take it with you and hand it to the parts guy and go I need this, or take the whole fuel line.
and if your taking the time to replace those lines, its well worth the time to replace all the line in the tank as well. that line generally goes bad before the line(s) in the engine compartment.