Leaf springs from F250 F350 compatible on E350 4x4 conversions?

[rebar]

I did a search but couldn't answer my question..

Are there stock ford leaf springs which work under a 4x4 E350 front end or with the UJOR kit?

Thanks!

 

[ujoint]

If you make your own mounts you can make the F series springs work but they're not compatible with our system.