If you purchase anything from any dealer then go to your International dealer. Ford dealerships will rape you on the price. Just get some good fuel line rated for diesel and cut them to the correct length that will fit. As far as the gaskets for the Y intake pipe you should be able to get new ones online. While you are doing the fuel lines for the fuel bowl go ahead and do new o-rings for it too. I did a little DIY thread on it, it's simple and made a huge difference. I need to update the pictures on the thread since photobucket messed up.
Link here, give me some time to fix the pictures.