Is there hookups for Subs in a OEM 2007 Jeep Liberty Stereo?

My girlfriend just bought a 2007 Jeep Liberty Limited with Sirus/6 disc changer and steering wheel controls. She wants me to put in her old subwoofer system into her new car. I wanted to know if the OEM unit has hook ups for this or if there is an adapter or something? I have a 05' Frontier that had the same thing from the factory and I bought a new Headunit, had to buy the adpater for the steering wheel controls and lost the disc changer. Trying to avoid this at all costs.