I've done this several times in the last year. It's easier if you raise the front of the car - for #4 below.
1) drain rad; remove upper hose.
2) loosen but don't remove the nuts/bolts affixing the lower brackets to the frame crossmember. This will allow slight movement on rad removal.
3) loosen but don't remove the upper bolts. They will support the rad until you remove it.
4) remove bolts affixing lower brackets to sides of radiator. Leave brackets in place on frame crossmember.
5) underneath car: rotate bottom of rad forward to access, loosen and remove the lower hose*. You may be able to pry it off the stub. You can probably wiggle it back and forth from above to loosen it on the stub.
6) remove upper mount bolts and lift out radiator
* If you can't access the lower hose clamp and have to undo the lower hose from the water pump, it's pretty soft and you should be able to remove it from the heater pipe without bending it.
For new rad installation, reverse above.
Lower rad hose, make sure hose clamp screw is pointed downward for accessibility.
For upper mounts, suggest substituting 1/2" longer bolts with spacers to move the bolt heads outside of mount channels for accessibility.