I sugest you choose parts and have them in hand before taking it apart. Some of the aftermarket bushings dont include the inner steel shell. You would need to leave the old ones on the pins. They say poly bushings squeak.
Excellent suggestion. I've built front ends with rubber, polyurethane, and polygraphite. Never had a problem with PST's polygraphite squeaking.
FWIW: PST came with new shells on uppers, but re-used lower shell. Energy required re-use of all shells. Rubbers came with new shells all around. My DD 73 /6 Dart is all rubber, the Demon uses Energy in the front, rubber in the rear. Turn-in is less sharp on rubber front, but ride is better.