Addco sway bar
I installed an Addco bar on a ‘67 Dart a few years ago; it was a flopping mess in 3000 miles.
Look here for how I reengineered the attachments points to provide durable performance:
http://slantsix.org/forum/viewtopic.php?t=43447&highlight=sway+bar+addco
My advice would be to purchase a better designed bar from one of our sponsors; Hellwig
