Don't try this at home. Unless you're really cheap like me. My '83 K30 Diesel completely flattened the 2.5" front lift springs I put under it. My snowplow is going on it within the next week, so I wanted beefier springs and a bit more lift up front so it sits level. I took stock front 2-leaf front springs off an '84 K5, and combined them with an overload spring pack that I pulled off an '80 Crew Cab dually. Since I was too cheap to go buy new grade 8 bolts or proper spring bolts, I used a front bolt off a Quadrajet. I figure what the heck... it's only temporary... unless it works. Now it's time to go make the 2nd spring pack.