The parts-store hardline tubing uses male IF (inverted flare) fittings, so you'll need 1 or 2 elbows: one to adapt OEM tube to new line, and maybe another for the radiator for the new line going back into the tank. If you can get a tight enough bend on the new tube, you may not need that 2nd elbow. If your parts store doesn't have the elbows you need, there's McMaster-Carr, Dorman, and others.
Might want to buy an extra tube or two - it's only about $7 per stick - for mockup & playing with bends. Take your time making it look clean, avoiding sharp edges, and locating any clamps. Attractive plumbing & wiring are nice details too often overlooked.