I'm needing a longer shackle for the S10 project, so I'm looking into lowering shackles. The best price I can find is on a 2" lowering shackle for a 88-05 c1500. I don't know what springs and bolts these use, and would like to find out exactly what it is before I buy it. The S10 is getting 2.5" width springs up front with 9/16" bolts. If a c1500 has 2.5" springs in the back with 9/16 bolts, then we're good to go. Anyone know? Here's what I'm looking at.