Some control arm bushings are pressed in, make sure if the sephias ones are pressed, that you have a press or access to one. Not sure if they are or not.
I was gonna do the bushings on my old del sol, but it was easier for me to just replace the whole control arms. But they ar cheap for that car and are a bit pricey for sephias.
Its not to hard to do it, you will have to take apart a lot of the front end to do it. took me an hr or 2 a side.
08 Kia Sportage
07 Saturn Aura
87 Mazda RX-7
Working on a 07 RX-8
99 Sephia, 01 Spectra, 05 Spectra