Leaf springs for dart swingers.

I'm wanting to raise the rear of my swinger some when I got it 19 years ago it had a very bad sag to it and i replaced the rear springs with stock replacements and added shackles to bring it up it did help but now that I'm older and wiser I know that shackles are a bad idea and I want to get new springs with factory shackles to bring it up correctly. What are you guys using and please add pics I'd love to see what your swingers look like with whatever spring you used I'm looking at the 21/2 inch lift springs from general spring they have 6 leafs instead of 5 here is a link.
1964-1976 Dodge & Plymouth Leaf Springs | General Spring
And before and after of mine.

20180829_104431.jpg

20180829_104511.jpg