Adding modern leaf springs and hangers to a TF

[Mac the Yankee]

After pricing out replacement shackles, etc for my '56 project, I started thinking about the idea of adding/using more modern springs/hangers (it's apparently a popular modification on 60-66 trucks?).

Pull-a-Parts are full of newer pickups, and prices are VERY reasonable, ride quality would be improved, and replacement bushings are MUCH cheaper, so...

what springs would you use?

PS- did a search and couldn't find any threads, but if this has been discussed already, I'd love to find those threads!