IMO a aluminum fuel(vent/return) line on a street driven car is not good. Sure it works but it brings the quality of your car down. Because no matter how good you mount it or what kind of fittings are used it is not as good as steel. And neither is braided line. And only flare fittings should be used with aluminum line, no compression fittings.
Your car is a E body, so it is easy to get pre bent lines. If your car was a unique piece then I could see the want for aluminum even though steel lines are easy to bend. Order up the line from Fine Lines or the like and have steel or even stainless steel lines and have a quality built car under ya.