Upper control arm help

Blades are expensive, but maybe one of those oscillating saws to cut the bolts. I tried to save a set of BBJ control arms from the salvage yard, but yea, the bolts we rusted to the inner sleeves of the bushings. By the time I could get back, it was crushed. Too bad, cause it was a '73 which had the drum brake spindles that others use for other types of disc conversions.