Scratch in upper control arm

Look for posts here on how to press out the old outer bushing shells. Several have used bolts (Grade 8 fine thread) and plumbing fittings to push them out. Another approach is to cut axially, then fold inward to peel them out. If you need more caster for today's radial tires (most cars do), consider Moog offset bushings (rubber) and read posts here.