rear springs (yes again)

hey guys i know this subject has been beat to death (please bare with me).... i have a '74 dart i need new springs flat/sag..i like the taller look i was planning on putting some 15" in wheels. i was looking at ss springs, does anyone have pictures with these springs (15" wheels a big plus, i wonder what size i could run).... or are the OE HD springs better? HELP!!!
Author: saabfan9