71 Dart Leaf Spring Help

Hello everyone I'm new to the forum and new to older mopars. I'm currently building a 71 Swinger with a slightly modified 340 and 727 trans. The car will be used mainly on the street and a few times a year at the track. My question is what in your opinion is the best leaf spring for me? Pics of your car with spring set up would be greatly appreciated. Thank you.