need to replace fuel line on 93 rodeo

Have a 93 rodeo 4x4 V6. Need to replace all fuel lines on it. Changed fuel filter then noticed it was leaking from the fuel line coming from the fuel tank. All the lines are rusted so it would be a good idea to change all of them anyone have any idea of where to buy these other than dealership. and how easy is it doing this job. Thank you in advance