[HO455]

I believe we need some more information on your truck and your intentions. Things like tire sizes. Are looking for it to sit flat or raked? Lowered, factory or, lifted?

As far as Suburbans vs trucks the biggest difference in spring rates from the factory would be in the rear. The weight on the front wheels of a Suburban isn't much different than a pick-up but, the rear axle carries five to eight hundred pounds more than a pick-up (Both with no cargo or passengers.)

My opinion is that front spring recommendations from a pick-up will be reasonably acceptable for a Burban. As long as it is apples to apples. In other words if you have a BBC TH400 with A/C and buddy buckets in your Burban, spring recommendations from a 250 3 speed manual short box stripper truck won't be very applicable.

I hope this helps.