Junkyard lowering springs?

[CircleCityRabbit]

I recently picked up a pack of those old school coil spring clamps to lower the front end a bit but im VERY hesitant about using them. Does anybody know of any stock pair of coil springs that are the same diameter but a couple inches shorter than the stock coils? Looking to pick up some stock springs from another vehicle to use rather than cutting or spending more $ on brand new springs. My truck is a 76' F100 with the 5.9.