Heh.. it's been so long ago it's like another planet. But that's how we got the old ones out. Still works good, burnt out some different bushings recently to salvage the OEM inner sleeves.
Remove Old Bushing:
Burn rubber out of old bush
lay CA on back, u channel up
pound bushing shell inward along length of shell with old dull chisel till shell diameter is pulled in and falls loose.
When I put the new ones in, I cut galv pipe to length of the inside of the 'U' and split it so it would keep side of U from collapsing.
Also used something like this, cut to fit snug in control arm U channel
And come to think of, though I dont remember doing it then.. just cut the old outer shell of the bush in half, lengthways, and spread it a little then cut to fit-snug length
To install once the spacer is in there, done everything from pound them in to using a cobbled batch of big-*** sockets with special config hook-type spring compressor to draw them in. Prefer the latter.