first off the fronts are tapered leafs = no rearching not good at all to do.
next you can only arch a givin leaf pack so much before you cant hook up the shackle end and not notice the axle is moved.
and as said waste of time re arching 30+ year old worn out springs. all the time/energy to half ass it just dont pay.
the solid axle gm trucks in 4x4 like these had flat stock fronts . but after years of use or worse 454 or 6.2 hanging in the front it kills the stockers.
lift springs have a longer set of leafs to give lift /arch and keep everything working correctly.
for bolt on good stuff tuff country/bds are about the top 2 name brand springs.
www.offroaddesign.com has tons of stuff for these trucks. and if you dont see it just ask. ( best to call over emails also )
and nothing wrong with denver or alcan springs just big
in the end. lots of guys run them and love them . just getting the bill is the killer. as thay are full custom built to your spec springs.