93 grand prix front subframe bushings

Do I need a hydraulic press to press the bushings together or can i just use a bottle jack from underneath. Its the back two bushings on the subframe FWD(if that helps). Basically is there any way to do it without completely removing the subframe?

get the car in the air, and put a jack under the middle of the back part of the cradle, remove the 2 18mm bolts lower the jack like 2 inches or so, then slide the bushing out, and replace, jack the cradle back up and bolt it up.