Which leaf springs to use?

GTX JOHN said
There is nothing wrong with the SS springs.
I would probably use the 3400 lb application.

They are WAY heavier than Calvert springs and Calvert
will work with you on the ride height (Adjustable by changing
the rear segments).

Thx John - I learned something here. I didn't know Calvert would/could change out the rear half of the leaf to adjust ride height.