Leafs parts list questions

Hey all,
Im ordering new leafs. Going with Espo 340 6 leaf +1 for my 69 Dart. Have a couple questions about hardware.
My shackles and U bolts look to be in good shape as far as I can see. Cant see the bushings obvioulsly, but Ill replace those regardless. Is it recommended to replace the shackles and ubolts anyways since its all apart? I know they arent very expensive, but why replace if still in ok shape? Just wanted to get your opinions?
Also, I thought I saw somewhere the front eye bolt is a different size with these new leafs. Can anyone confirm that? If so, Ill get those too.
Thanks for the help.