I recently purchased a 87 K10 Chevy short bed with a 4" lift and 33s. I'm ordering replacement shocks for the truck. The issue is it has the quad shock suspension option on it. The previous owner only used single shocks on the front. The hardware for the second shock is missing. Did GM use a longer bolt and washer to mount both shocks to the the shock mount on the axle? Or is there something I'm missing? Any Pics or advice on hardware would be great.