I do not want to move any bracketry.

I run 94ish F350 diesel front springs, stock , but with the overload removed. Shackle is in the back. They are pretty much flat. They cleared 36s perfectly before I hackedthe fenders, now 38s would look about right. I need to sit about 3" higher than I do now.

So Chevy rear springs. From a 2wd or 4wd or does it matter? from a OBS chevy truck, or a 88+? I am guessing suburbans/k5s up to 91?

Is the center pin on these in the center? I do not think it is on my springs