A cool picture of a 289 leaf spring chassis on Hawk Cars facebook site.
https://www.facebook.com/HawkCars/ph...type=3&theater
I could be wrong, but I thought the leaf springs connect directly to the top of the uprights with ball joints (at least in front), which connect to the leaf springs with a purpose made bracket. It's been a while, so I can't remember exactly what they look like.
Bob