Source for new 350 front springs
Well, after getting into a small accident and shredding my front passenger tire and fubaring the wheel, I decided get around to doing my ball joints.
I managed to get some time at my friend's shop so the truck could be lifted and managed to get the ball joints and fried u-joints done in about three hours. I ended up popping the diff and removing the carrier (man those outer races are tight into the housing mount) so I could get at the driver side seal which was leaking. That was enough of a pain in the butt that I opted not to change the passenger side.
Anyway, A look at the suspension revealed that the accident also jammed the axle back on the passenger side with enough force to shear off the alignment stud on the spring. Since they are the wrong springs (250 rate... 3400 lbs I believe?), It's time to change them out to the softer 350 springs. I managed to loosen the front u-bolts and pull the axle forward with a pry bar and tighten them back down.
I can't seem to find them on rock auto. Even when using '96 (my truck is a '97 but I've noticed a lot of places that mistake '97 for superduty trucks) and F350, a lot of the front springs are rated for independent front suspension.
Unfortunately there's no F350 OBS trucks in the scrap yard, and if there were, a lot of guys who go D60 hunting end up paying the yard guy a few bucks to just torch everything, including the springs, track bar, etc.