Okay, I'm dropping my 10B w/Springs attached to make room for my 4" lift and D60 . I am having great difficulty with the bolts holding the springs on to the truck. They are almost 30 yrs old, and sledgehammer is having trouble convincing them to leave. Since I don't intend to reuse the springs, I am thinking of cutting the bolts inside the mounts with either sawsall or angle grinder. Has anyone used either? Which worked best? Anything to watch out for? Thanks.